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Given : E(Ni^(2+)|Ni)^(@)=-0.25V, E(Zn^(...

Given : `E_(Ni^(2+)|Ni)^(@)=-0.25V, E_(Zn^(2+)|Zn)^(@)=-0.76V, E_(Cu^(2+)|Cu)^(@)=+0.34V, E_(Ag^(+)|Ag)^(@)=+0.8V`. Under standard conditions, which reaction(s) will occur spontaneously -

A

`Ni(s)+Zn^(2+)(aq)rarr Ni^(2+)(aq)+Zn(s)`

B

`Ni(s)+Cu^(2+)(aq)rarr Ni^(2+)(aq)+Cu(s)`

C

`Cu(s)+Ag^(+)(aq)rarr Ag(s)+cu^(2+)(aq)`

D

`Zn(s)+2Ag^(+)(aq)rarr 2Ag(s)+Zn^(2+)(aq)`

Text Solution

Verified by Experts

The correct Answer is:
B, C, D
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