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