Question

what is the answer of 3rd question

Answer 1

If we keep iron in a copper sulphate solution the blue colour of the solution will change into green colour. The colour changes because iron displaces copper from copper sulphate solution as it is at a higher position in the reactivity series and hence is more reactive than copper.Copper will be left out as a reddish brown precipitate.

Fe +CuSO4-------->FeSO4+Cu.

# A student of class 10.
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