The most useful and important vehicle for dissolving gold is aqua regia, (royal water), composed of two parts of hydrochloric (muriatic) acid, and one part of nitric (aquafortis). Gold is ...

Let's look at three metals reacting with three acids. Magnesium plus nitric acid gives us magnesium nitrate. Calcium plus hydrochloric acid gives us calcium chloride. And zinc plus sulphuric acid ...