Question

What is aqua regia? How it is helpful in dissolving noble metals?​

Answer 1

Answer:

Currently, aqua regia, a mixture of concentrated nitric acid and hydrochloric acid, usually in a molar ratio of 1:3, is used to dissolve noble metals. ... The mixture generates nitrosyl chloride, chlorine gas, and other noxious fumes on its own. 2nd question I didn't know bro sorry

Answer 2

Answer:

Recovering Precious Metals

Currently, aqua regia, a mixture of concentrated nitric acid and hydrochloric acid, usually in a molar ratio of 1:3, is used to dissolve noble metals. This allows these relatively rare elements to be retrieved from worn-out and scrapped catalytic converters and other equipment.