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17 April, 12:14

In the relationship between 'DeltaG' and K for a given reaction, if 'DeltaG' is negative, what is K?

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  1. 17 April, 14:55
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    Consider a hypothetical reaction:

    A ↔ B

    The change in free energy, ΔG can be related to the equilibrium constant K as:

    ΔG = - RT ln K

    i. e. K = exp (-ΔG/RT)

    When ΔG is negative, the exponential becomes positive which results in a high value of the equilibrium constant (K). More and more of the reactants get converted into products and the reaction tends to be spontaneous.
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