What is aqua regia solution ?​

Explanation:

Aqua regia is a mixture of nitric acid and hydrochloric acid, optimally in a molar ratio of 1:3.

Explanation:

Aqua regia is a corrosive, fuming yellow solution that is a 1:3 mixture of concentrated nitric and hydrochloric acids. It is commonly used to remove noble metals such as gold, platinum and palladium from substrates, particularly in microfabrications and microelectronics labs.

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