1. What is the main focus of Chapter 5: Acids, Bases and Salts?
The main focus of Chapter 5 is to understand acids, bases, salts, and their properties and reactions.
2. What is an acid?
An acid is a substance that tastes sour and turns blue litmus paper red.
3. What is a base?
A base is a substance that tastes bitter, feels slippery, and turns red litmus paper blue.
4. What is a salt?
A salt is a substance formed when an acid reacts with a base during neutralization.
5. Give an example of an acid.
An example of an acid is lemon juice, which contains citric acid.
6. Give an example of a base.
An example of a base is soap, which contains sodium hydroxide.
7. Give an example of a salt.
An example of a salt is common salt, which is sodium chloride.
8. What happens when an acid is added to water?
When an acid is added to water, it dissolves and makes the solution acidic.
9. What happens when a base is added to water?
When a base is added to water, it dissolves and makes the solution basic.
10. What is an indicator?
An indicator is a substance that shows whether a solution is acidic or basic by changing color.
11. Name a natural indicator.
A natural indicator is litmus, obtained from lichens.
12. What color does blue litmus turn in an acid?
Blue litmus turns red in an acid.
13. What color does red litmus turn in a base?
Red litmus turns blue in a base.
14. What is the taste of acids?
The taste of acids is sour.
15. What is the taste of bases?
The taste of bases is bitter.
16. How do bases feel when touched?
Bases feel slippery or soapy when touched.
17. What is neutralization?
Neutralization is the reaction between an acid and a base to form salt and water.
18. What are the products of neutralization?
The products of neutralization are salt and water.
19. Give an example of a neutralization reaction.
An example of a neutralization reaction is hydrochloric acid reacting with sodium hydroxide to form sodium chloride and water.
20. What happens to the pH during neutralization?
During neutralization, the pH of the solution becomes closer to 7, which is neutral.
21. What is the pH scale?
The pH scale is a measure of how acidic or basic a solution is, ranging from 0 to 14.
22. What does a pH less than 7 indicate?
A pH less than 7 indicates an acidic solution.
23. What does a pH greater than 7 indicate?
A pH greater than 7 indicates a basic solution.
24. What does a pH of 7 indicate?
A pH of 7 indicates a neutral solution.
25. What is the pH of pure water?
The pH of pure water is 7, which is neutral.
26. Name an acid found in the stomach.
An acid found in the stomach is hydrochloric acid.
27. What is the role of hydrochloric acid in the stomach?
Hydrochloric acid in the stomach helps digest food and kill harmful bacteria.
28. What happens when there is excess acid in the stomach?
When there is excess acid in the stomach, it causes acidity or indigestion.
29. What is used to treat excess stomach acid?
A base like milk of magnesia is used to treat excess stomach acid.
30. What is milk of magnesia?
Milk of magnesia is a base, magnesium hydroxide, used as an antacid.
31. What is an antacid?
An antacid is a substance that neutralizes excess acid in the stomach.
32. Name another antacid besides milk of magnesia.
Another antacid is sodium bicarbonate, also called baking soda.
33. What happens when an antacid reacts with stomach acid?
When an antacid reacts with stomach acid, it neutralizes it, forming salt and water.
34. What is the chemical name of common salt?
The chemical name of common salt is sodium chloride.
35. How is common salt produced?
Common salt is produced by evaporating seawater or from salt mines.
36. What is the use of salt in food?
Salt is used in food to add taste and preserve it.
37. What is vinegar?
Vinegar is a solution of acetic acid used in cooking and preservation.
38. Is vinegar an acid or a base?
Vinegar is an acid because it contains acetic acid.
39. What is the taste of vinegar?
The taste of vinegar is sour due to acetic acid.
40. What is lime water?
Lime water is a solution of calcium hydroxide, which is a base.
41. What happens when carbon dioxide is passed through lime water?
When carbon dioxide is passed through lime water, it turns milky due to calcium carbonate formation.
42. Is lime water acidic or basic?
Lime water is basic because it contains calcium hydroxide.
43. What is turmeric?
Turmeric is a natural indicator that changes color in acidic and basic solutions.
44. What color does turmeric turn in a base?
Turmeric turns red in a base.
45. What color does turmeric turn in an acid?
Turmeric remains yellow in an acid.
46. What is China rose?
China rose is a natural indicator made from its petals to test acids and bases.
47. What color does China rose turn in an acid?
China rose turns dark pink (magenta) in an acid.
48. What color does China rose turn in a base?
China rose turns green in a base.
49. What is litmus paper?
Litmus paper is a paper dipped in litmus solution used to test acids and bases.
50. What happens to red litmus in a neutral solution?
Red litmus remains red in a neutral solution.
51. What happens to blue litmus in a neutral solution?
Blue litmus remains blue in a neutral solution.
52. What is phenolphthalein?
Phenolphthalein is a synthetic indicator used to test acids and bases.
53. What color does phenolphthalein turn in a base?
Phenolphthalein turns pink in a base.
54. What color does phenolphthalein turn in an acid?
Phenolphthalein remains colorless in an acid.
55. What is methyl orange?
Methyl orange is a synthetic indicator used to test acids and bases.
56. What color does methyl orange turn in an acid?
Methyl orange turns red in an acid.
57. What color does methyl orange turn in a base?
Methyl orange turns yellow in a base.
58. What is a universal indicator?
A universal indicator is a mixture of indicators showing a range of colors for different pH values.
59. What does a red color in a universal indicator show?
A red color in a universal indicator shows a strongly acidic solution.
60. What does a blue color in a universal indicator show?
A blue color in a universal indicator shows a strongly basic solution.
61. What does a green color in a universal indicator show?
A green color in a universal indicator shows a neutral solution.
62. What is the source of citric acid?
The source of citric acid is citrus fruits like lemons and oranges.
63. What is the source of lactic acid?
The source of lactic acid is curd or sour milk.
64. What is the source of tartaric acid?
The source of tartaric acid is tamarind or grapes.
65. What is the source of acetic acid?
The source of acetic acid is vinegar.
66. What is the source of hydrochloric acid in our body?
The source of hydrochloric acid in our body is the stomach, where it is produced by cells.
67. What is the source of sodium hydroxide?
The source of sodium hydroxide is industrially produced from salt water.
68. What is the source of calcium hydroxide?
The source of calcium hydroxide is lime water, made from limestone.
69. What is the source of magnesium hydroxide?
The source of magnesium hydroxide is milk of magnesia, used as an antacid.
70. What is the chemical formula of hydrochloric acid?
The chemical formula of hydrochloric acid is HCl.
71. What is the chemical formula of sodium hydroxide?
The chemical formula of sodium hydroxide is NaOH.
72. What is the chemical formula of sodium chloride?
The chemical formula of sodium chloride is NaCl.
73. What is the chemical formula of water?
The chemical formula of water is H₂O.
74. What is the chemical formula of calcium hydroxide?
The chemical formula of calcium hydroxide is Ca(OH)₂.
75. What is the chemical formula of magnesium hydroxide?
The chemical formula of magnesium hydroxide is Mg(OH)₂.
76. What is the chemical formula of acetic acid?
The chemical formula of acetic acid is CH₃COOH.
77. What happens when an acid reacts with a metal?
When an acid reacts with a metal, it produces hydrogen gas and a salt.
78. Give an example of an acid reacting with a metal.
An example is hydrochloric acid reacting with zinc to form zinc chloride and hydrogen gas.
79. What gas is produced when an acid reacts with a metal?
Hydrogen gas is produced when an acid reacts with a metal.
80. What happens when an acid reacts with a carbonate?
When an acid reacts with a carbonate, it produces carbon dioxide, salt, and water.
81. Give an example of an acid reacting with a carbonate.
An example is hydrochloric acid reacting with calcium carbonate to form calcium chloride, carbon dioxide, and water.
82. What gas is produced when an acid reacts with a carbonate?
Carbon dioxide gas is produced when an acid reacts with a carbonate.
83. What is the test for carbon dioxide gas?
The test for carbon dioxide gas is passing it through lime water, which turns milky.
84. Why does lime water turn milky with carbon dioxide?
Lime water turns milky with carbon dioxide because it forms calcium carbonate, which is insoluble.
85. What happens when a base reacts with an acid?
When a base reacts with an acid, it forms salt and water in a neutralization reaction.
86. What is the use of sodium hydroxide in daily life?
Sodium hydroxide is used in making soap and detergents.
87. What is the use of calcium hydroxide in daily life?
Calcium hydroxide is used in whitewashing walls and making lime water.
88. What is the use of magnesium hydroxide in daily life?
Magnesium hydroxide is used as an antacid to relieve acidity.
89. What is the use of hydrochloric acid in daily life?
Hydrochloric acid is used in cleaning and in the stomach for digestion.
90. What is the use of acetic acid in daily life?
Acetic acid is used in vinegar for cooking and preservation.
91. What is the use of citric acid in daily life?
Citric acid is used in food and drinks for flavoring.
92. What is the use of tartaric acid in daily life?
Tartaric acid is used in baking powder and as a flavoring agent.
93. What is the use of sodium chloride in daily life?
Sodium chloride is used as table salt for seasoning and preserving food.
94. What is a strong acid?
A strong acid is an acid that completely dissociates in water, like hydrochloric acid.
95. What is a weak acid?
A weak acid is an acid that partially dissociates in water, like acetic acid.
96. What is a strong base?
A strong base is a base that completely dissociates in water, like sodium hydroxide.
97. What is a weak base?
A weak base is a base that partially dissociates in water, like magnesium hydroxide.
98. Is lemon juice a strong or weak acid?
Lemon juice is a weak acid because it contains citric acid.
99. Is sodium hydroxide a strong or weak base?
Sodium hydroxide is a strong base because it fully dissociates in water.
100. Is vinegar a strong or weak acid?
Vinegar is a weak acid because it contains acetic acid.
101. Is milk of magnesia a strong or weak base?
Milk of magnesia is a weak base because it partially dissociates in water.
102. What happens when you mix two acids?
When you mix two acids, they do not neutralize each other; the solution remains acidic.
103. What happens when you mix two bases?
When you mix two bases, they do not neutralize each other; the solution remains basic.
104. What happens when you mix an acid and a base?
When you mix an acid and a base, they neutralize each other to form salt and water.
105. What is the pH of a strong acid?
The pH of a strong acid is very low, close to 0 or 1.
106. What is the pH of a strong base?
The pH of a strong base is very high, close to 13 or 14.
107. What is the pH of a weak acid?
The pH of a weak acid is between 3 and 6.
108. What is the pH of a weak base?
The pH of a weak base is between 8 and 11.
109. What is the color of litmus in a neutral solution?
The color of litmus in a neutral solution remains unchanged—red stays red, blue stays blue.
110. What is the color of phenolphthalein in a neutral solution?
The color of phenolphthalein in a neutral solution is colorless.
111. What is the color of methyl orange in a neutral solution?
The color of methyl orange in a neutral solution is orange.
112. What is the color of turmeric in a neutral solution?
The color of turmeric in a neutral solution is yellow.
113. What is the color of China rose in a neutral solution?
The color of China rose in a neutral solution is light pink.
114. What happens when you add acid to a base slowly?
When you add acid to a base slowly, the base gets neutralized gradually, forming salt and water.
115. What happens when you add base to an acid slowly?
When you add base to an acid slowly, the acid gets neutralized gradually, forming salt and water.
116. What is the importance of neutralization in daily life?
The importance of neutralization in daily life is to treat acidity and maintain balance, like in the stomach.
117. What is acid rain?
Acid rain is rain with a low pH due to dissolved acids like sulfuric acid from pollution.
118. What causes acid rain?
Acid rain is caused by pollutants like sulfur dioxide and nitrogen oxides mixing with water in the air.
119. What is the effect of acid rain on buildings?
Acid rain damages buildings by corroding materials like limestone and marble.
120. What is the effect of acid rain on plants?
Acid rain harms plants by making the soil acidic and affecting growth.
121. What is the effect of acid rain on water bodies?
Acid rain makes water bodies acidic, harming aquatic life.
122. What is the pH of acid rain?
The pH of acid rain is less than 5.6, making it acidic.
123. How can we reduce acid rain?
We can reduce acid rain by reducing pollution from factories and vehicles.
124. What is the role of bases in cleaning?
Bases help in cleaning by breaking down grease and dirt, like in soap.
125. Why are acids used in food preservation?
Acids are used in food preservation because they prevent the growth of bacteria, like vinegar.
126. What is the role of acids in digestion?
Acids in digestion, like hydrochloric acid, break down food and kill germs.
127. What is the role of bases in agriculture?
Bases in agriculture, like lime, neutralize acidic soil to help plants grow.
128. What is the chemical name of baking soda?
The chemical name of baking soda is sodium bicarbonate.
129. What is the chemical formula of baking soda?
The chemical formula of baking soda is NaHCO₃.
130. What happens when baking soda reacts with an acid?
When baking soda reacts with an acid, it produces carbon dioxide, salt, and water.
131. What is the use of baking soda in cooking?
Baking soda is used in cooking to make dough rise by releasing carbon dioxide.
132. What is the use of baking soda as an antacid?
Baking soda is used as an antacid to neutralize excess stomach acid.
133. What is the chemical name of limestone?
The chemical name of limestone is calcium carbonate.
134. What is the chemical formula of limestone?
The chemical formula of limestone is CaCO₃.
135. What happens when limestone reacts with an acid?
When limestone reacts with an acid, it produces carbon dioxide, salt, and water.
136. What is the use of limestone in construction?
Limestone is used in construction to make cement and as a building material.
137. What is the chemical name of lime?
The chemical name of lime is calcium oxide.
138. What is the chemical formula of lime?
The chemical formula of lime is CaO.
139. What happens when lime reacts with water?
When lime reacts with water, it forms calcium hydroxide, a base.
140. What is the use of lime in agriculture?
Lime is used in agriculture to neutralize acidic soil.
141. What is the chemical name of sulfuric acid?
The chemical name of sulfuric acid is sulfuric acid itself, with the formula H₂SO₄.
142. What is the use of sulfuric acid in industry?
Sulfuric acid is used in industry to make fertilizers and batteries.
143. Is sulfuric acid a strong or weak acid?
Sulfuric acid is a strong acid because it fully dissociates in water.
144. What is the chemical name of nitric acid?
The chemical name of nitric acid is nitric acid itself, with the formula HNO₃.
145. What is the use of nitric acid in industry?
Nitric acid is used in industry to make fertilizers and explosives.
146. Is nitric acid a strong or weak acid?
Nitric acid is a strong acid because it fully dissociates in water.
147. What is the chemical name of potassium hydroxide?
The chemical name of potassium hydroxide is potassium hydroxide, with the formula KOH.
148. What is the use of potassium hydroxide in daily life?
Potassium hydroxide is used in making soaps and detergents.
149. Is potassium hydroxide a strong or weak base?
Potassium hydroxide is a strong base because it fully dissociates in water.
150. What is the chemical name of ammonium hydroxide?
The chemical name of ammonium hydroxide is ammonium hydroxide, with the formula NH₄OH.
151. What is the use of ammonium hydroxide in daily life?
Ammonium hydroxide is used as a cleaning agent.
152. Is ammonium hydroxide a strong or weak base?
Ammonium hydroxide is a weak base because it partially dissociates in water.
153. What happens when you add acid to turmeric?
When you add acid to turmeric, it stays yellow.
154. What happens when you add base to turmeric?
When you add base to turmeric, it turns red.
155. What happens when you add acid to China rose?
When you add acid to China rose, it turns dark pink (magenta).
156. What happens when you add base to China rose?
When you add base to China rose, it turns green.
157. What happens when you add acid to phenolphthalein?
When you add acid to phenolphthalein, it remains colorless.
158. What happens when you add base to phenolphthalein?
When you add base to phenolphthalein, it turns pink.
159. What happens when you add acid to methyl orange?
When you add acid to methyl orange, it turns red.
160. What happens when you add base to methyl orange?
When you add base to methyl orange, it turns yellow.
161. What happens when you add acid to litmus solution?
When you add acid to litmus solution, it turns red.
162. What happens when you add base to litmus solution?
When you add base to litmus solution, it turns blue.
163. What is the source of oxalic acid?
The source of oxalic acid is spinach and some other green vegetables.
164. What is the use of oxalic acid?
Oxalic acid is used in cleaning rust and stains.
165. Is oxalic acid a strong or weak acid?
Oxalic acid is a weak acid because it partially dissociates in water.
166. What is the chemical formula of oxalic acid?
The chemical formula of oxalic acid is H₂C₂O₄.
167. What is the source of formic acid?
The source of formic acid is the sting of ants and bees.
168. What is the use of formic acid?
Formic acid is used in leather production and as a preservative.
169. Is formic acid a strong or weak acid?
Formic acid is a weak acid because it partially dissociates in water.
170. What is the chemical formula of formic acid?
The chemical formula of formic acid is HCOOH.
171. What is the source of malic acid?
The source of malic acid is apples.
172. What is the use of malic acid?
Malic acid is used as a flavoring agent in food.
173. Is malic acid a strong or weak acid?
Malic acid is a weak acid because it partially dissociates in water.
174. What is the chemical formula of malic acid?
The chemical formula of malic acid is C₄H₆O₅.
175. What is the source of ascorbic acid?
The source of ascorbic acid is citrus fruits like oranges, also known as Vitamin C.
176. What is the use of ascorbic acid?
Ascorbic acid is used to boost immunity and as an antioxidant in food.
177. Is ascorbic acid a strong or weak acid?
Ascorbic acid is a weak acid because it partially dissociates in water.
178. What is the chemical formula of ascorbic acid?
The chemical formula of ascorbic acid is C₆H₈O₆.
179. What happens when an acid is added to baking soda?
When an acid is added to baking soda, it produces carbon dioxide gas, salt, and water.
180. What is the test for hydrogen gas?
The test for hydrogen gas is bringing a burning splinter near it, which makes a pop sound.
181. Why does baking soda fizz with acid?
Baking soda fizzes with acid because it releases carbon dioxide gas.
182. What is the chemical name of Epsom salt?
The chemical name of Epsom salt is magnesium sulfate.
183. What is the chemical formula of Epsom salt?
The chemical formula of Epsom salt is MgSO₄.
184. What is the use of Epsom salt?
Epsom salt is used in baths to relieve muscle pain and as a fertilizer.
185. What is the chemical name of table salt?
The chemical name of table salt is sodium chloride.
186. What is the chemical name of washing soda?
The chemical name of washing soda is sodium carbonate.
187. What is the chemical formula of washing soda?
The chemical formula of washing soda is Na₂CO₃.
188. What is the use of washing soda?
Washing soda is used in laundry to soften water and remove stains.
189. What is the chemical name of bleaching powder?
The chemical name of bleaching powder is calcium hypochlorite.
190. What is the chemical formula of bleaching powder?
The chemical formula of bleaching powder is Ca(OCl)₂.
191. What is the use of bleaching powder?
Bleaching powder is used to disinfect water and bleach clothes.
192. What is the chemical name of plaster of Paris?
The chemical name of plaster of Paris is calcium sulfate hemihydrate.
193. What is the chemical formula of plaster of Paris?
The chemical formula of plaster of Paris is CaSO₄·½H₂O.
194. What is the use of plaster of Paris?
Plaster of Paris is used to make casts and molds in construction and medicine.
195. What happens when plaster of Paris is mixed with water?
When plaster of Paris is mixed with water, it hardens into gypsum.
196. What is the chemical name of gypsum?
The chemical name of gypsum is calcium sulfate dihydrate.
197. What is the chemical formula of gypsum?
The chemical formula of gypsum is CaSO₄·2H₂O.
198. What is the use of gypsum?
Gypsum is used in construction for making walls and ceilings.
199. What is the source of sulfuric acid in acid rain?
The source of sulfuric acid in acid rain is sulfur dioxide from burning fossil fuels.
200. What is the source of nitric acid in acid rain?
The source of nitric acid in acid rain is nitrogen oxides from vehicle emissions.
201. What is the chemical formula of carbon dioxide?
The chemical formula of carbon dioxide is CO₂.
202. What is the chemical formula of hydrogen gas?
The chemical formula of hydrogen gas is H₂.
203. What is the effect of acids on metals?
Acids react with metals to produce hydrogen gas and a salt.
204. What is the effect of bases on metals?
Bases do not react with most metals under normal conditions.
205. What is the effect of acids on carbonates?
Acids react with carbonates to produce carbon dioxide, salt, and water.
206. What is the effect of bases on carbonates?
Bases do not react with carbonates under normal conditions.
207. What is the effect of acids on skin?
Acids can burn or irritate the skin because they are corrosive.
208. What is the effect of bases on skin?
Bases can make the skin slippery and may burn because they are caustic.
209. What is a corrosive substance?
A corrosive substance is one that can damage or destroy other materials, like strong acids.
210. What is a caustic substance?
A caustic substance is one that can burn or corrode, like strong bases.
211. Why should acids be handled with care?
Acids should be handled with care because they are corrosive and can cause burns.
212. Why should bases be handled with care?
Bases should be handled with care because they are caustic and can cause burns.
213. What safety measure should be taken with acids?
A safety measure with acids is to wear gloves and goggles to avoid contact.
214. What safety measure should be taken with bases?
A safety measure with bases is to avoid skin contact and use protective gear.
215. What happens if you spill acid on your skin?
If you spill acid on your skin, it can cause burns or irritation.
216. What should you do if acid spills on your skin?
If acid spills on your skin, wash it with plenty of water and seek help.
217. What happens if you spill base on your skin?
If you spill base on your skin, it can cause burns or a slippery feeling.
218. What should you do if base spills on your skin?
If base spills on your skin, wash it with water and seek medical help.
219. What is the role of indicators in experiments?
The role of indicators in experiments is to identify if a substance is acidic, basic, or neutral.
220. Why do we use natural indicators?
We use natural indicators because they are easily available and safe, like turmeric.
221. Why do we use synthetic indicators?
We use synthetic indicators because they give precise color changes, like phenolphthalein.
222. What is the advantage of a universal indicator?
The advantage of a universal indicator is that it shows a range of pH values with different colors.
223. What is the disadvantage of litmus?
The disadvantage of litmus is that it only shows if a substance is acidic or basic, not the pH range.
224. What is the disadvantage of turmeric as an indicator?
The disadvantage of turmeric is that it only changes color with bases, not acids.
225. What is the advantage of China rose as an indicator?
The advantage of China rose is that it gives distinct colors for acids and bases.
226. What is the pH of rainwater normally?
The pH of rainwater normally is around 5.6 due to dissolved carbon dioxide.
227. Why is rainwater slightly acidic?
Rainwater is slightly acidic because it dissolves carbon dioxide from the air, forming carbonic acid.
228. What is carbonic acid?
Carbonic acid is a weak acid formed when carbon dioxide dissolves in water, with the formula H₂CO₃.
229. What is the effect of carbonic acid in rainwater?
The effect of carbonic acid in rainwater is that it makes it slightly acidic but not harmful.
230. What is the pH of soil good for plant growth?
The pH of soil good for plant growth is usually between 6 and 7, slightly acidic to neutral.
231. What happens if soil is too acidic?
If soil is too acidic, it can harm plant growth, and bases like lime are added to neutralize it.
232. What happens if soil is too basic?
If soil is too basic, it can affect nutrient availability, and acids may be added to balance it.
233. What is the role of acids in batteries?
Acids like sulfuric acid in batteries help conduct electricity and power devices.
234. What is the role of bases in toothpaste?
Bases in toothpaste, like sodium hydroxide, neutralize acids in the mouth to prevent decay.
235. What is the role of acids in soft drinks?
Acids like citric acid in soft drinks add a tangy taste and act as preservatives.
236. What is the role of bases in oven cleaners?
Bases like sodium hydroxide in oven cleaners break down grease and burnt food.
237. What is the role of salts in fertilizers?
Salts like potassium chloride in fertilizers provide nutrients to plants for growth.
238. What is the role of acids in rust removal?
Acids like phosphoric acid in rust removal dissolve rust from metal surfaces.
239. What is the role of bases in soap making?
Bases like sodium hydroxide in soap making react with fats to form soap.
240. What is the chemical name of rust?
The chemical name of rust is iron oxide, with the formula Fe₂O₃.
241. What causes rust to form?
Rust forms when iron reacts with oxygen and water, an acidic condition speeds it up.
242. How can rust be prevented?
Rust can be prevented by painting or coating iron to keep out air and water.
243. What is the pH of blood?
The pH of blood is around 7.4, slightly basic.
244. What maintains the pH of blood?
The pH of blood is maintained by buffers like bicarbonate that neutralize excess acids or bases.
245. What is a buffer?
A buffer is a substance that resists changes in pH by neutralizing added acids or bases.
246. What is the pH of saliva?
The pH of saliva is around 6.2 to 7.6, slightly acidic to neutral.
247. What is the pH of urine?
The pH of urine varies from 4.5 to 8, depending on diet and health.
248. What is the pH of seawater?
The pH of seawater is around 8, slightly basic.
249. What makes seawater basic?
Seawater is basic due to dissolved salts and bases like bicarbonates.
250. What is the pH of lemon juice?
The pH of lemon juice is around 2, strongly acidic.
251. What is the pH of vinegar?
The pH of vinegar is around 3, acidic.
252. What is the pH of milk?
The pH of milk is around 6.5, slightly acidic.
253. What is the pH of soda water?
The pH of soda water is around 4, acidic due to dissolved carbon dioxide.
254. What is the pH of soap solution?
The pH of soap solution is around 9 to 10, basic.
255. What is the pH of toothpaste?
The pH of toothpaste is around 7 to 8, neutral to slightly basic.
256. What is the pH of coffee?
The pH of coffee is around 5, slightly acidic.
257. What is the pH of tea?
The pH of tea is around 5 to 6, slightly acidic.
258. What is the pH of orange juice?
The pH of orange juice is around 3 to 4, acidic.
259. What is the pH of baking soda solution?
The pH of baking soda solution is around 8 to 9, basic.
260. What is the pH of milk of magnesia?
The pH of milk of magnesia is around 10, basic.
261. What is the pH of hydrochloric acid solution?
The pH of hydrochloric acid solution is around 1, strongly acidic.
262. What is the pH of sodium hydroxide solution?
The pH of sodium hydroxide solution is around 13, strongly basic.
263. What is the pH of sulfuric acid solution?
The pH of sulfuric acid solution is around 1, strongly acidic.
264. What is the pH of nitric acid solution?
The pH of nitric acid solution is around 1, strongly acidic.
265. What is the pH of acetic acid solution?
The pH of acetic acid solution is around 3, weakly acidic.
266. What is the pH of citric acid solution?
The pH of citric acid solution is around 2 to 3, acidic.
267. What is the pH of rainwater with acid rain?
The pH of rainwater with acid rain is below 5.6, acidic.
268. What is the pH of tomato juice?
The pH of tomato juice is around 4, acidic.
269. What is the pH of curd?
The pH of curd is around 4 to 5, acidic due to lactic acid.
270. What is the pH of ant sting?
The pH of ant sting is around 3, acidic due to formic acid.
271. What is the pH of bee sting?
The pH of bee sting is around 5, acidic due to formic acid.
272. What should you apply on an ant sting?
You should apply a base like baking soda on an ant sting to neutralize the acid.
273. What should you apply on a bee sting?
You should apply a base like baking soda on a bee sting to neutralize the acid.
274. What is the chemical name of Vitamin C?
The chemical name of Vitamin C is ascorbic acid.
275. What is the effect of Vitamin C on the body?
Vitamin C boosts immunity and prevents scurvy, acting as a weak acid.
276. What is the pH of apple juice?
The pH of apple juice is around 3 to 4, acidic due to malic acid.
277. What is the pH of grape juice?
The pH of grape juice is around 3, acidic due to tartaric acid.
278. What is the pH of tamarind?
The pH of tamarind is around 2 to 3, acidic due to tartaric acid.
279. What is the pH of spinach?
The pH of spinach is around 5 to 6, slightly acidic due to oxalic acid.
280. What is the pH of a neutral salt solution?
The pH of a neutral salt solution, like sodium chloride, is around 7.
281. What is the pH of an acidic salt solution?
The pH of an acidic salt solution, like ammonium chloride, is less than 7.
282. What is the pH of a basic salt solution?
The pH of a basic salt solution, like sodium carbonate, is greater than 7.
283. What is the chemical formula of ammonium chloride?
The chemical formula of ammonium chloride is NH₄Cl.
284. What is the use of ammonium chloride?
Ammonium chloride is used in medicines and as a fertilizer.
285. What is the chemical formula of potassium chloride?
The chemical formula of potassium chloride is KCl.
286. What is the use of potassium chloride?
Potassium chloride is used in fertilizers and as a salt substitute.
287. What is the chemical formula of calcium chloride?
The chemical formula of calcium chloride is CaCl₂.
288. What is the use of calcium chloride?
Calcium chloride is used to melt ice on roads and in food preservation.
289. What is the chemical formula of sodium sulfate?
The chemical formula of sodium sulfate is Na₂SO₄.
290. What is the use of sodium sulfate?
Sodium sulfate is used in detergents and paper making.
291. What is the chemical formula of magnesium chloride?
The chemical formula of magnesium chloride is MgCl₂.
292. What is the use of magnesium chloride?
Magnesium chloride is used in de-icing roads and as a nutrient supplement.
293. What is the chemical formula of potassium nitrate?
The chemical formula of potassium nitrate is KNO₃.
294. What is the use of potassium nitrate?
Potassium nitrate is used in fertilizers and fireworks.
295. What is the chemical formula of sodium nitrate?
The chemical formula of sodium nitrate is NaNO₃.
296. What is the use of sodium nitrate?
Sodium nitrate is used in fertilizers and food preservation.
297. What is the chemical formula of calcium nitrate?
The chemical formula of calcium nitrate is Ca(NO₃)₂.
298. What is the use of calcium nitrate?
Calcium nitrate is used in fertilizers to provide calcium to plants.
299. What is the chemical formula of ammonium sulfate?
The chemical formula of ammonium sulfate is (NH₄)₂SO₄.
300. What is the use of ammonium sulfate?
Ammonium sulfate is used as a fertilizer to provide nitrogen to plants.
301. What is the chemical formula of copper sulfate?
The chemical formula of copper sulfate is CuSO₄.
302. What is the use of copper sulfate?
Copper sulfate is used as a fungicide and in electroplating.
303. What is the chemical formula of zinc sulfate?
The chemical formula of zinc sulfate is ZnSO₄.
304. What is the use of zinc sulfate?
Zinc sulfate is used in medicines and as a fertilizer.
305. What is the chemical formula of iron sulfate?
The chemical formula of iron sulfate is FeSO₄.
306. What is the use of iron sulfate?
Iron sulfate is used to treat iron deficiency and as a fertilizer.
307. What is the chemical formula of aluminum sulfate?
The chemical formula of aluminum sulfate is Al₂(SO₄)₃.
308. What is the use of aluminum sulfate?
Aluminum sulfate is used in water purification and paper making.
309. What is the chemical formula of sodium bicarbonate?
The chemical formula of sodium bicarbonate is NaHCO₃.
310. What is the difference between a strong acid and a weak acid?
A strong acid fully dissociates in water, while a weak acid only partially dissociates.
311. What is the difference between a strong base and a weak base?
A strong base fully dissociates in water, while a weak base only partially dissociates.
312. What is the difference between an acid and a base?
An acid tastes sour and turns blue litmus red, while a base tastes bitter and turns red litmus blue.
313. What is the difference between a salt and an acid?
A salt is a neutral compound formed from an acid and base, while an acid is sour and reactive.
314. What is the difference between a salt and a base?
A salt is a neutral compound, while a base is bitter and slippery.
315. What is the difference between natural and synthetic indicators?
Natural indicators come from plants, like turmeric, while synthetic indicators are man-made, like phenolphthalein.
316. What is the final goal of studying acids, bases, and salts?
The final goal is to understand their properties, reactions, and uses in daily life.
317. How do acids and bases help in daily life?
Acids and bases help in digestion, cleaning, cooking, and agriculture.
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