Question

Blue coloured solution is given in the figure. Which solution is it? What causes the colour

change in this solution. Explain.​

Answer 1

Blue color solution = CuSO4

An iron nail dipped, Copper Sulphate reacrs towards Iron nail.

CuSO4 + Fe --- Fe2SO4 + Cu

This Cu deposit on Iron nail and it's color change to reddigh brown.

CuSO4 change to Fe2SO4 which is green in color.

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Answer 2

Answer:

The blue coloured solution is CuSO4 solution.

When Copper sulphate reacts with Iron, a displacement reactions occurs where Fe displaces Cu and forms a green coloured solution known as FeSO4 or Ferrous Sulphate solution.