Which of the following is used for dissolution of gold ? *
hydrochloric acid
sulphuric acid
nitric acid
aqua regia
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Aqua regia
"regal water" or "king's water") is a mixture of nitric acid and hydrochloric acid, optimally in a molar ratio of 1:3. Aqua regia is a yellow-orange (sometimes red) fuming liquid, so named by alchemists because it can dissolve the noble metals, gold and platinum, though not all metals.
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Answer:
Aqua regia.
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