How does aqua regia dissolves Gold and Platinum?
Asked by kartikmangaliya22.10spicertl | 27th May, 2020, 09:55: PM
Nitric acid (1 part by volume) mixed with conc. hydrochloric acid (3 parts by volume) produces a mixture called aqua regia.
HNO3 + 3HCl → NOCl + 2H2O + 2[Cl]
Aqua regia contains nascent chlorine and reacts with noble metals such as gold and platinum to produce chlorides.
Pt + 4[Cl] → PtCl4
Au +3[Cl] → AuCl3
Answered by Ramandeep | 27th May, 2020, 10:01: PM
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