what do you mean by aqua regia
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it is an acid made by mixing HCl and HNO3. It is so hard and corrosive that it can react with gold
moryaminakshi2:
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Aqua regia is a mixture of nitric acid and hydrochloric acid, at a molar ratio of 1:3 optimally
Aqua regia, mixture of concentrated nitric and hydrochloric acids, usually one part of the former to three parts of the latter by volume.
The formula of aqua regia;HNO₃+3 HCl
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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