Question

Give a balanced equation for addition of iron to copper [II] sulphate solution. State the change in colour seen.

Answer 1

Copper [II] sulphate + Iron → Iron [II] sulphate + Copper

\[\ce{\underset{\text{Blue}}{CuSO4} + Fe ->\underset{\text{Light green}}{FeSO4} + \underset{\text{Brownish red}}{Cu}}\]

The colour changes from blue(CuS0₄) to light green(FeS0₄)