Which of the following is used for dissolution of gold

• GC Acids Bases Salts

Which of the following is used for dissolution of gold?

1. Hydrochloric acid
2. Sulphuric acid
3. Nitric acid
4. Aqua regia

Answer

Aqua-regia is a very strong acid and can be used to dissolve gold. It is a 1:3 mixture of concentrated HNO₃ and concentrated HCl.

The correct option is D.