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Displacement Reaction

On the basis ...

Question

On the basis of the reactions arrange the metals in the decreasing order of their reactivity: 1)FeSO4+Zn=ZnSO4+Fe 2)NiSO4+Fe=FeSO4+Ni

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Solution

According to the two mentioned reactions, Zn is more reactive than Fe as it displace Fe from its solution. Fe is more reactive than Ni as it displace Ni from its solution.
So overall Ni is least reactive. Zn is most reactive and Fe is in between Zn and Ni.

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