Question

Write five uses of hydrochloric acid.

Answer 1

Disclaimer: Any five of the below mentioned uses of hydrochloric acid can be used to answer this question.

Uses of hydrochloric acid are as follows:

1. It is used as a laboratory reagent.

2. It is used in the preparation of chlorides.

3. It is used to extract glue from bones.

4. It is used in the production of dyes, drugs, paints, photographic chemicals, etc.

5. It is used in the production of glucose from starch.

6. It is used to extract bone charcoal.

7. It used in the pickling process where metal surfaces are cleaned by dipping them into a mixture of hydrochloric acid and sulphuric acid.

8. It is used in the preparation of aqua regia, which is a mixture of concentrated hydrochloric acid and concentrated nitric acid in the ratio 3 : 1.