Aqua regia is a mixture of


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.

Use of Aqua regia:

  • 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%).

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