Q.

If the Nernst equation for the emf of the cell is Ecell=E cell0−2.303RT2Flog10Ni2+Ag+12 , then the balanced redox reaction involved in the cell reaction is

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a

Ni+Ag+1→Ni1++Ag

b

Ni+2Ag+1→Ni2++2Ag

c

Ni+2+2Ag→Ni+2Ag+1

d

Ni+1+Ag→Ni+Ag+1

answer is B.

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Detailed Solution

Ni+2Ag+1→Ni2++2AgThe Nernst equation for emf of the cell is given by Ecell=Ecell0−2.303RTnFlog10K where K is the equilibrium constant for the spontaneous redox reaction. The equilibrium constant will be Kc=Ni2+Ag+12 for Ni+2Ag+1→Ni2++2Ag
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