Question

What is aqua regia


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Answer 1

Aqua regia is a yellow-orange or sometimes red colour fuming liquid. Aqua regia is a mixture of nitric acid and hydrochloric acid, at a molar ratio of 1:3 optimally.

• It can dissolve noble metals such as gold and platinum but not all metals.Aqua regia is mainly used for the manufacture of chloroauric acid.It is used as an electrolyte in the Wohlwill process to refine gold of the highest quality (99.999%).

Answer 2

Aqua regia is primarily used to produce chloroauric acid, the electrolyte in the Wohlwill process for refining the highest quality (99.999%) gold. Aqua regia is also used in etching and in specific analytic procedures. It is also used in some laboratories to clean glassware of organic compounds and metal particles.