The most useful and important vehicle for dissolving gold is aqua regia, (royal water), composed of two parts of hydrochloric (muriatic) acid ... the metal. The per-chloride of gold dissolves ...

we were curious as to the cause of cracking in 1 per cent hydrochloric acid with 1 per cent dissolved selenium dioxide. Following the procedure of Brown 1, increasingly larger polarizing currents ...

For example, when magnesium reacts with hydrochloric acid ... It is not safe to react the most reactive metals (potassium and sodium) with acid in a lab. As you move down the reactivity series ...

Do not attempt to perform this demonstration. Small pieces of Solid sodium metal are placed in two different concentrations of two different acids (hydrochloric acid and nitric acid). The sodium ...

When additional base is added, the precipitate dissolves. The reactions can then be reversed with the addition of hydrochloric acid. The precipitate will reappear and then redissolve. Turn on stir ...