Question

a piece of granulated zinc was dropped into copper sulphate solution .down the colour change that you will observe write. down the chemical equation.

Answer 1

Hey mate..
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The colour will change from Blue to colourless .

Reason:---
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CuSO4 is always a blue solution and when zinc granules are added to it , Zinc being a more reactive metal replaces Cu from its salt solution thus forming ZnSO4 which is colourless .

The chemical equation involved is -->

Zn (s) + CuSO4 (aq) -------------> ZnSO4 (aq) + Cu (s)

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