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The cell, Pt|H(2)" (1 atm)"||H^(+) (pH=x...

The cell, `Pt|H_(2)" (1 atm)"||H^(+) (pH=x)|`
normal calomel electrode, has an emf of 0.67 volt as `25^(@)C`. Calculate the pH of the solution. The oxidation potential of calomel electrode on the hydrogen scale is -0.28 volt.

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The correct Answer is:
pH = 6.61
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