Account for the following.
a. Dry HCl gas does not change the colour of dry
blue litmus paper
b. Antacid tablets are used by a person suffering
from stomach pain.
c. Toothpaste is used for cleaning teeth.
Answers
1. To change the color of blue litmus paper to red, there must be a presence of acid. Dry HCl gas is not acidic because water is required for the dissociation of HCl into H +and Cl − . Therefore, dry HCl gas is not acidic and will not change the color of dry blue litmus paper.
2. Antacid tablets generally consist of magnesium hydroxide and aluminium hydroxide which are mild bases. They react chemically with the excess hydrochloric acid produced in the stomach and neutralize its effect.
3. The toothpaste contains some basic ingredients and they help in neutralizing the effect of the acid and also in increasing the pH of the mouth. Thus toothpaste help in checking corrosion of enamel and decay of teeth.
hope it helps you....✌️
Answer:
1)False
2)True
3)True
go with these answers ⬆️