Aqua regia, which can dissolve even gold and platinum, is a freshly prepared mixture of:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → Concentrated hydrochloric acid and concentrated nitric acid in the ratio 3 : 1
Aqua regia (‘royal water’) is a freshly prepared mixture of concentrated hydrochloric acid and concentrated nitric acid in the ratio 3 : 1. It is one of the few reagents that can dissolve gold and platinum.