Question

Copper sulphate solution is taken in a test tube.
(1) Among the following metals which metal can
reduce its blue colour? Why.
(metals, cu, fe,ag) ​

Answer 1

Answer:

Cu can reduce its blue colour because only its ion is of blue colour.

Explanation:

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Answer 2

Iron(Fe) can reduce its blue colour as it lies above copper in the metal activity series. It is more electropositive than copper so it can displace copper from its salt in a redox reaction.

The blue colour of copper sulphate solution becomes sea green and a reddish brown deposit of copper metal is seen.