Question

why does the colour of iron sulphate solution change when zinc granules are added in it​

Answer 1

Answer:

Because zinc is more reactive than iron. Zinc displaces iron and the colour changes

Answer 2

The green color of the ferrous sulfate solution looses it's colour. Explanation: A single displacement reaction is defined as the reaction in which a more reactive metal displaces a less reactive metal from its chemical reaction.When zinc granules are added to copper sulphate solution the below reaction takes place

CuSO4​+Zn→ZnSO4​+Cu

In this reaction, zinc is more reactive than copper so when copper sulphate reacts with zinc, zinc sulphate forms and some precipitate of Copper is formed.

So copper is deposited

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