Question

Balanced chemical reaction, colour changed, gas formed and residue formed when copper sulphate is heated​

Answer 1

Answer:

When Copper sulphate is heated strongly, it changes into white coloured anhydrous copper sulphate. Later, when water is added again to it then again the colour of copper sulphate is changed to blue. It is a reversible chemical change.

Answer 2

Answer:

Copper sulphate crystals are blue in colour due to the presence of water of crystallization. The colour in only there because of the presence of water of crystallization.

When they are heated strongly anhydrous copper sulphate is formed that is white in colour(colorless). This is so because of removal of water of crystallization.

Explanation:

The reaction is given by,

CuSO

4

.5H

2

0(blue)→CuSO

4

(white)+5H

2

O