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Class 12 NEET Chemistry Electrochemistry Questions

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Question : 10

Total: 74

At 298K, the standard electrode potentials of Cu2+∕Cu,Zn2+∕Zn,Fe2+∕Fe and Ag+∕Ag are 0.34V, −0.76V,−0.44V and 0.80V, respectively.
On the basis of standard electrode potential, predict which of the following reaction cannot occur?

CuSO4(aq)+Zn(s)→ZnSO4(aq)+Cu(s)
CuSO4(aq)+Fe(s)→FeSO4(aq)+Cu(s)
FeSO4(aq)+Zn(s)→ZnSO4(aq)+Fe(s)
2CuSO4(aq)+2Ag(s)→2Cu(s)+Ag2SO4(aq)

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