1.

Which of the following is used for dissolution of gold? (a) Hydrochloric acid (b) Sulphuric acid (c ) Nitric acid ,(d) Aqua regia

Answer»


Solution :AQUA - regia is used for the dissolution of gold. Gold dissolve only in aqua regia Aqua regia is a mixitrue of conc . `HNO_(3)` and conc. HCI in the RATIO `1:3`.
aqua -regia =`[Conc.HNO_(3)+conc HCI]`


Discussion

No Comment Found