Aqua regia react with gold equation.
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Gold metal will dissolve only in aqua regia, a mixture of concentrated hydrochloric acid and concentrated nitric acid in a 3:1 volume ratio. The products of the reaction between gold and the concentrated acids are AuCl4–(aq), NO(g), and H2O.
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Aqua Regia (Latin name for 'Royal water') is a freshly prepared mixture of concentrated Hydrochloric acid and concentrated Nitric acid in the ratio of 3:1.
It can dissolve Gold even though neither of these acids do so alone. It is a highly corrosive, fuming liquid. It is one of the few reagents that is available to dissolve gold and platinum.
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