Which acidic reagent, comprising a 3:1 mixture of concentrated hydrochloric acid and concentrated nitric acid by volume, can dissolve noble metals such as gold?

💡 Solution & Explanation

Aqua Regia is a highly corrosive, fuming mixture prepared by combining concentrated hydrochloric acid and concentrated nitric acid in a 3:1 volumetric ratio, capable of dissolving noble metals like gold. Other mixtures like Bordeaux Mixture are agricultural fungicides rather than precious metal solvents.