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Q.

If a spoon of copper metal is placed in a solution of ferrous sulphate

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a

iron will precipitate

b

no reaction will take place

c

Cu and Fe will precipitate

d

Cu will precipitate out

answer is D.

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Detailed Solution

$E_{{Cu}^{2 +} / Cu}^{o} = 0 .34, E_{{Fe}^{2 +} / Fe}^{o} = - 0 .44 V$

So Cu can't displace ${Fe}^{2 +}$ .

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