Question

State what happen when
1. Hydrated copper sulphate is heated.
2. Gypsum is heated at 373 K.
3. Chlorine gas is passed through dry slaked lime.

Answer 1

Answer:

1. When hydrated copper sulphate is heated , five molecules of water of crystallisation are removed and the blue colour of crystals turn white.

2.when gypsum is heated at 373k plaster of Paris is formed .

3. Bleaching powder is formed .

Ca(OH)2+ Cl2=CaOCl2+ H2O

Explanation: