Question

In which of the following, displacement reaction is not possible?
Fe+CuSo4 → FeSo4 +Cu
Zn+CuSo4 → ZnSo4+Cu
Cu+FeSo4 → CuSo4+Fe
Zn+FeSo4 →ZnSo4+Fe​

Answer 1

Answer:

3rd one (approximately)

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Answer 2

(3) Cu+FeSo4 → CuSo4+Fe

The displacement reaction that will not be possible is-

Cu+FeSo4 → CuSo4+Fe

The reason why this reaction will not be possible is

Copper is less reactive than iron,

in such a reaction where displacement is supposed to take place the metal being displaced from the salt should have a lower potential of reaction

so that it can be replaced by the incoming metal

But in this case, we can clearly observe that IRON is more reactive than COPPER. Therefore displacement will not take place.

Therefore, the displacement reaction that will not be possible is [C]

Cu+FeSo4 → CuSo4+Fe