Question

Aqua regia is a mixture of _____.

• A. 2 parts of HCl and 1 part of HNO₃.
• B. 4 parts of HCl and 5 part of HNO₃.
• C. 3 parts of HCl and 1 part of HNO₃.
• D. 1 parts of HCl and 3 part of HNO₃.

Answer 1

The correct option is C

3 parts of HCl and 1 part of HNO₃.

Aqua regia is a mixture of nitric acid and hydrochloric acid, optimally in a molar ratio of 1:3. Aqua regia is a yellow-orange fuming liquid. Aqua regia was so named because it can dissolve the noble metals gold and platinum.