Answer:
generally speaking aqua regia is a mixture of concentrated nitric and hydrochloric acids. It is a highly corrosive liquid able to attack gold and other resistant substances.
Step-by-step explanation:
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, so named by alchemists because it can dissolve the noble metals gold and platinum, though not all metals.
Formula: HNO₃+3 HCl
Boiling point: 108 °C
Melting point: -42 °C
Density: 1.21 g/cm³