Question

WHAT IS THE ACTION OF AQUA REGIA ON GOLD?

Answer 1

Aqua Regia is a mixture of hydrochloric acid and nitric acid. It can dissolve gold,
which single acids alone cannot do. Here we see that each of the acids separately has
no effect on the gold but a mixture of the two dramatically reacts with the gold. To
three samples of gold are added (1) concentrated hydrochloric acid (2) concentrated
hydrochloric and concentrated nitric acids and (3) concentrated nitric acid. The gold
reacts only with the concentrated acid mixture which is referred to as aqua regia
(royal water).

Answer 2

Answer:

Aqua Regia is a mixture of hydrochloric acid and nitric acid which make an rusted gold ornament shine. it is in the ratio of 1:3. 1 is of Hydrochloric acid and 3 of nitric acid.