Give that Eo2Hg/Hg2+=−0.788V and EoHg2+2/2Hg2+=−0.920V.
Write answer as nearest integer after dividing by 100.
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Solution
First calculate the standard EMF of the cell. E0=0.920−0.788=0.132. Now calculate the value of the equilibrium constant K. logK=nE00.0592=1×0.1320.0592=2.24 K=172.60. Hence, the equilibrium constant for the reaction is 172.60.