Question

An iron nail turns brownish when put in copper sulphate solution . copper sulphate solution turns green from blue ..............(GIVE REASON)

Answer 1

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The color of the copper sulfate changes from blue to green.

Copper gets displaced from its sulfate solution by iron as iron is more reactive than copper. This forms Iron Sulfate.

The copper deposits on the nail forming a brown coating

Answer 2

because of the formation of iron sulphate feso4 it changes its colour because iron is more reactive then copper