Question
Aqua regia, which can dissolve gold, is a freshly
prepared mixture of concentrated hydrochloric acid and concentrated ______.Solution
Aqua regia 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 can do so alone. · Aqua regia is a highly corrosive, fuming liquid. · It is one of the few reagents that can dissolve gold and platinum.
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