0.39. Which of the following is used for dissolution of gold? (a) Hydrochloric acid (b) Sulphuric acid (c) Nitric acid WO) Aqua regia
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Answer:
aqua regia
Explanation:
Gold is a noble metal that will not react even with strong acids, hence aqua regia, which is a mixture of Nitric and Hydrochloric acid in the ratio of 1:3 is used for the dissolution of gold.
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Aqua regia as the u stable nascent Chlorine reacts with noble metals
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