Relationship between ΔG⁰ AND K






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aTirumalai-1I
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Relationship between ΔG⁰ AND K

Postby aTirumalai-1I » Wed Jan 31, 2018 10:16 am

Hi,

Can someone explain the relationship between ΔG⁰ AND K? In other words, how do we know that we can relate the equilibrium constant directly to changes in enthalpy and entropy?

Thanks in advance!

Sabrina Dunbar 1I
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Re: Relationship between ΔG⁰ AND K

Postby Sabrina Dunbar 1I » Wed Jan 31, 2018 10:24 am

The Kb that we are using here is not the same Kb as in acids and bases calculations. Here, we are using Boltzmann's constant, k = 1.38 x 10–23 J·K-1, to stand for Kb in free energy and entropy calculations. Hopefully this answers your question.

Lindsay Kester 2L
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Re: Relationship between ΔG⁰ AND K

Postby Lindsay Kester 2L » Wed Jan 31, 2018 11:27 am

The K here is also a constant for all equations, and doesn't change with each reaction/molecule being used.


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