Its acid, chloroauric acid, is then heated to eliminate hydrogen chloride gas.
2.
For example, it reacts with hydrochloric acid to form chloroauric acid ( ):
3.
The gold dissolves to become chloroauric acid.
4.
"' Chloroauric acid "'is an inorganic compound with the chemical formula.
5.
At the beginning of the reduction process the gold atoms are liberated from the chloroauric acid.
6.
Gold chloride ( chloroauric acid ) solutions are used to make colloidal gold by reduction with citrate or ascorbate ions.
7.
Liquid liquid extraction of chloroauric acid is used for the recovery, concentrating, purification, and analytical determinations of gold.
8.
However, the ions are removed from the equilibrium by hydrochloric acid, forming AuCl 4 " ions, or chloroauric acid, thereby enabling further oxidation.
9.
Chloroauric acid, HAuCl 4, the product formed when gold dissolves in aqua regia, is sometimes referred to as " gold chloride " or " acid gold trichloride ".
10.
The tin ( II ) chloride reduces the chloroauric acid from the dissolution of gold in aqua regia to a colloid of elemental gold supported on tin dioxide to give a purple precipitate or coloration.
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