Q.

Cell notation of a galvanic cell is  FesFe+2C1Ag+C2Ags. Emf of the cell is maximum when C1 : C22  is

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a

1

b

10

c

0.1

d

0.01

answer is D.

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Detailed Solution

Cell reactionFes+2Ag+C2→Fe+2C1+AgsNernst EquationEcell=Ecello−0.05912logFe+2Ag+2Ecell=Ecello−0.05912logC1C22Ecell∝−logC1C22Lesser the magnitude of C1C22 higher will be the emf of the cell.
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