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Electrochemistry
Question
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If the Eocell for a given reaction has a negative value then which of the following gives the correct relationships for the values of ΔGo and Keq ?

  • ΔGo < 0; Keq > 1

  • ΔGo < 0; Keq < 1

  • ΔGo > 0; Keq < 1

  • ΔGo > 0; Keq > 1

Answer

C.

ΔGo > 0; Keq < 1

ΔGo = - nFEo
When Eo is negative, then ΔGo > 0
ΔGo = - RT ln Keq
When ΔGo >0, Keq = 10-x which is less than ones ,ie, Keq < 1.

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