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Electrochemistry
Question
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How is the standard free energy change related to
(i) emf of a galvanic cell related to the reaction.
(ii) equilibrium constant of the reaction in equilibrium state?

Answer

(i) The relation between free energy change and emf of a galvanic cell of the reaction is given as
ΔG = – nFEcell

(ii) The relation between free energy change and equilibrium constant of the reaction is given by 
ΔG = – 2.303 RT log Kc.

 

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