Embibe Experts Solutions for Chapter: Acids, Bases and Salts, Exercise 1: CBSE-2021 Term I

While diluting an acid, why is it recommended that the acid should be added to water and not water to the acid?

Dry hydrogen chloride gas does not change the colour of dry litmus paper. Why ?

How is sodium hydroxide manufactured in industries? Name the process. In this process, a gas X is formed as a by-product. This gas reacts with lime water to give a compound Y, which is used as a bleaching agent in the chemical industry. Identify X and Y and write the chemical equation of the reaction involved.

A teacher provided acetic acid, water, lemon juice, an aqueous solution of sodium hydrogen carbonate and sodium hydroxide to students in the school laboratory to determine the pH values of these substances using pH papers. One of the students reported the pH values of the given substances as $3, 12, 4, 8$ and $14$ respectively. Which one of these values is not correct? Write its correct value stating the reason.

Baking soda is a mixture of:

The chemical formula for plaster of Paris is:

List the important products of the chlor-alkali process. Write one important use of each.

How is washing soda prepared from sodium carbonate? Give its chemical equation. State the type of this salt. Name the type of hardness of water which can be removed by it?