Embibe Experts Solutions for Chapter: Acids, Bases and Salts, Exercise 1: Exercise

A gas is produced when conc.${\mathrm{H}}_2{\mathrm{SO}}_4$ is added to a solid sodium chloride tank in a test tube. The gas coming out through the delivery tube is passed over a dry blue litmus paper and then over a moist blue litmus paper. What do you observe? Explain reason with the help of a chemical equation.

Rahul is suffering from the problem of acidity after overeating, which of the following would you suggest as a remedy;

Baking soda solution, lemon juice, vinegar

Which property did you think, while choosing the remedy?

What is tooth enamel chemically? State the condition under which it starts corroding? What happens when food particles are left in the mouth after eating?

Equal lengths of magnesium ribbon are taken into two test tubes A and B. ${\mathrm{H}}_2{\mathrm{SO}}_4$ is added to test tube A and ${\mathrm{H}}_2{\mathrm{CO}}_3$ in test tube B in equal amounts. Out of the two acids taken above which one will have a lower pH value and lower ${\mathrm{H}}^{+}$ ion concentration respectively.

What happens when $\mathrm{HCl}$ is added to turmeric powder and what happens when $\mathrm{NaOH}$ is added to turmeric powder ?

What is the colour of phenolphthalein with (a) acidic solution (b) basic solution?

Name two olfactory indicators.

Why does bee sting cause pain and irritation?