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Standard XII
Chemistry
Galvanic Cells
Question

What are the changes that can be observed with the iron rod and the colour of copper sulphate solution ?

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Solution
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When iron is dipped in $$CuSO_4$$ a displacement reaction takes place.

In this, iron being a more reactive metal displaces a lesser reactive metal Copper($$Cu$$) from its compound to form $$FeSO_4$$.

The blue colour of the solution eventually fades and turn into light green due to the formation of ferrous sulphate.

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