Question

Write at least one important use of the following chemicals
(a) H3PO4 (b) H2SO4 (c) NH3 (d) Water gas

Answer 1

(a) The uses of phosphoric acids (H3PO4) includes :

1. It is used for manufacturing salts of phosphates for its use in fertilizers.

2. It is useful also in the production of dental cements.

(b) The use of sulphuric acid (H2SO4) -

1. It has an important role in the manufacture of other chemicals like HCl, dyes, detergents, drugs, etc.

(c) The use of water gas is -

1. It plays a great role in removing the poisonous carbon monoxide gas from fuel cells.