Ionic compounds do not dissolve in non-polar compounds. They can dissolve only in polar compounds. Dissolution is actually dissociation of the ionic compounds and the polar solvent into constituent...
=> Aqua regia, a mixture of concentrated hydrochloric acid and nitric acid in 1:3 ratio, can dissolve gold. It is to be used readily or it would decompose. Au + HNO3 + 4 HCl ----> HAuCl4 + NO +...