Question

The metal salt a is blue in colour. When salt a is heated strongly

Answer 1

Blue colour of copper sulphate is due to presence of 5 molecules of water. When copper sulphate is heated, it loses water molecules and turns into grey-white colour, which is known as anhydrous copper sulphate. After adding water; anhydrous copper sulphate becomes blue again.

Answer 2

Answer:

Metal salt is copper sulphate(cuso4.5h2o)

Explanation:

When cuso4.5h2o is heated it loses water of crystallization and becomes colourless.

cuso4.5h2o + heat =====> cuso4 + 5h2o