Question

A solution of copper sulphate was stored in a beaker made of aluminium metal. After

about an hour it was observed that the blue colour of the solution faded and the inner

surface of the container is spoiled.


(a) Why does the blue colour fade?

(b) Why is the inner surface of the beaker spoiled? Show it by a balanced chemical

equation.

(c) Which substance is oxidized and which substance is reduced in the process?​

Answer 1

Answer:

(a) this happen because zinc is higher up in the reactivity series than copper.so zinc react with solution displacing coppper to form ZnSo4 and the Cu metal get deposited over rod.The ZnSo4 solution is colourless and hence due to the formation of this solution the blue colour start fading.

.