Question

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Why does the colour of copper sulphate solution change when an iron nail is dipped in it ?

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Answer 1

COPPER SULPHATE COLOUR CHANGES WHEN IRON NAIL DIPPED ON IT BECAUSE IRON IS MORE REACTIVE THAN COPPER SO, IRON DISPLACES COPPER AND SOLUTION BECOME IRON SULPHATE

Answer 2

Heyy. mate. !!! its colour change blue to light green.. :) . This shows Iron is more reactive than Copper, it can replace Copper from CuSO4. CuSO4 is in blue Color and FeSO4 is in light greencolor..