How do I know which salts are soluble in water? What generalization exists for chromate salts, i.e. salts of #CrO_4^(2-)#, and other salts?
Well, chemistry is an experimental science.........which of course is determined by EXPERIMENT.
And it is a fact that chromate ion forms water-insoluble salts when treated with most heavy metals........, i.e.
On the other hand, the salts of alkali metal are MOSTLY soluble.....
And in aqueous solution.....we can propose the following generalities....
The given rules follow a hierarchy. Alkali metal and ammonium salts tend to be soluble in all circumstances. The one exception to this rule is