Question

CuS$O_4$.5$H_2$O is white in colour.

• A. True
• B. False

Answer 1

The correct option is B

False

CuS$O_4$.5$H_2$O is called as Copper sulphate pentahydrate or commonly called blue vitriol. It is blue in colour due to the presence of 5 molecules of water of crystallization. When we heat the compound it loses its 5 molecules of water of crystallization and becomes anhydrous copper sulphate which is white in colour.