Chromic Selenite, Cr2O3.3SeO2, is precipitated as a pale green substance, insoluble in water, when potassium selenite is added to a boiling solution of chromic chloride. If the latter contain excess of hydrochloric acid, the sparingly soluble diselenite, Cr2O3.6SeO2, is also formed.
Chromic Selenate itself has not been isolated, but double salts (which are alums) of the type Cr2(SeO4)3.R•2SeO4.24H2O are known, as well as those of the type Cr2(SeO4)3.R•2SO4.24H2O. |