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Aqua-regia used by alchemists to separate silver and gold is a mixture of
hydrochloric acid (concentrated) and nitric acid (concentrated)
hydrochloric acid (concentrated) and sulphuric acid (concentrated)
nitric acid (concentrated) and sulphuric acid (concentrated)
hydrochloric acid (dilute) and sulphuric acid (dilute)
"regal water" or "Royal water") is a mixture of nitric acid and hydrochloric acid, optimally in a molar ratio of 1:3. Aqua regia is a yellow-orange (sometimes red) fuming liquid, so named by alchemists because it can dissolve the noble metals gold and platinum, though not all metals.
By: Ramesh Kumar ProfileResourcesReport error
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