Question

what are aqua regia name two special metal which dissolve in aqua regia

Answer 1

Answer:

Goldsmith use aqua regia solution for cleaning jwelleries,in which outer part of jwellery and dust desolve.two special metal which dissolve in this solution are gold and silver.

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Answer 2

Answer:

Aqua regia is a mixture of conc. Hydrochloric acid (3 parts) and conc. Nitric acid (1 part).

3HCl+HNO3 --> NOCl + 2H2O + 2[Cl]

The nascent Chlorine released helps. dissolve even unreactive metals like Platinum and Gold.

Pt + 4[Cl] --> PtCl4

Au + 3[Cl] --> AuCl3

Hope this helps you.