The "platinum chloride" of the laboratory is made by dissolving platinum in aqua regia.
If the precipitate fails to dissolve, it is treated with aqua regia.
Fuming hydrochloric acid and aqua regia attack thorium readily, but the alkalies are without action.
Oxidise sulphur by aqua regia, and reduce silver chloride as in III.
When solutions in aqua regia are evaporated, chlorides are left.
Dissolve in aqua regia, and product after evaporation will be found better for toning than that precipitated by iron.
I found a seven-shilling piece partly dissolved by the aqua regia in which it was immersed.
Wash insoluble part with ammonia to remove silver chloride, if present, and dissolve in aqua regia.
They produced sulphuric and nitric acids, and aqua regia, able to dissolve gold, the king of metals.
A metal discovered by Claus, associated with iridium, in the residue from crude platinum, which is insoluble in aqua regia.