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FAQs on Acid Base and Salt - Class notes, Class 10, CBSE, NCERT

1. What are acids and bases?
Ans. Acids are substances that release hydrogen ions (H+) when dissolved in water, while bases are substances that release hydroxide ions (OH-) when dissolved in water. Acids have a sour taste and can corrode metals, while bases have a bitter taste and a slippery feel.
2. How do acids and bases react with each other?
Ans. When an acid and a base react with each other, they undergo a neutralization reaction. During this reaction, the hydrogen ions from the acid combine with the hydroxide ions from the base to form water. Additionally, a salt is formed as a byproduct of the reaction.
3. What is a salt?
Ans. A salt is a compound formed when the hydrogen ions from an acid are replaced by metal or ammonium ions. Salts are electrically neutral and are composed of positive and negative ions. They can be either soluble or insoluble in water and have a variety of uses, including as food preservatives, fertilizers, and in the production of chemicals.
4. How can we differentiate between acids and bases?
Ans. There are several ways to differentiate between acids and bases. One way is to use indicators, which are substances that change color in the presence of acids or bases. For example, litmus paper turns red in the presence of an acid and blue in the presence of a base. Another way is to test the conductivity of a solution using a conductivity tester. Acids are generally good conductors of electricity, while bases are poor conductors.
5. What are the common examples of acids, bases, and salts?
Ans. Some common examples of acids include vinegar (acetic acid), lemon juice (citric acid), and hydrochloric acid. Examples of bases include baking soda (sodium bicarbonate), ammonia, and sodium hydroxide. Common salts include table salt (sodium chloride), Epsom salt (magnesium sulfate), and baking powder (a mixture of a salt and an acid).
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