Question

Choose the correct answer from the options given below:
Aqua regia is a mixture of:
(a) dilute hydrochloric acid and concentrated nitric acid
(b) Concentrated hydrochloric acid and dilute nitric acid
(c) Concentrated hydrochloric acid [1 part] and concentrated nitric acid [3 parts]
(d) Concentrated hydrochloric acid [3 parts] and concentrated nitric acid [1 part]

Answer 1

Aqua – regia is a mixture of concentrated hydrochloric acid and concentrated nitric acid in the ratio 3 : 1.

Hence, the correct answer is (d).