When heated in a tube, oxide of selenium of a carmine red rises along with selenic acid, white and deliquescent.
Sulphurous acid has no action on selenic acid, but instantly decomposes the selenious acid.
selenic acid has a powerful attraction for water, and evolves much heat when mixed with it.
selenic acid may be obtained in solution by deflagrating selenium or a selenite with potassic nitrate.
