2009 · Q85
Aqua regia used by alchemists to separate silver and gold is a mixture of
General KnowledgeChemistry
- Ahydrochloric acid (concentrated) and nitric acid (concentrated)
- Bhydrochloric acid (concentrated) and sulphuric acid (concentrated)
- Cnitric acid (concentrated) and sulphuric acid (concentrated)
- Dhydrochloric acid (dilute) and sulphuric acid (dilute)
Explanation
Aqua regia is a mixture of concentrated hydrochloric and nitric acids (3:1).