A mixture of three parts of conc. HCl and one part of conc. HNO3 is aqua regia. It gives nascent chlorine and can dissolve gold and platinum [noble metals].

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What is aqua regia? - Chemistry

Question

What is aqua regia?

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Solution

A mixture of three parts of conc. HCl and one part of conc. HNO₃ is aqua regia. It gives nascent chlorine and can dissolve gold and platinum [noble metals].

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P - Block Group 17 Elements - Hydrogen Chloride

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