How can the Gibbs energy change of a reaction relate to entropy and enthalpy?

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How can the Gibbs energy change of a reaction relate to entropy and enthalpy?

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Answer 1 · 2017-06-16T07:53:23

Well $DeltaG^@=DeltaH^@-TDeltaS^@$ ............

Explanation:

The $"Gibbs Free Energy"$ includes an entropy term, and an enthalpy term. The $"Gibbs Free Energy"$ is the single unequivocal criterion for the spontaneity of chemical change. If $DeltaG^@$ $<0$ , the reaction is spontaneous; if $DeltaG^@$ $=0$ , the reaction is at equilibrium; If $DeltaG^@$ $>0$ , the reaction is non-spontaneous.

$DeltaG^@$ values have been tabulated for many substances, and can be used to assess many chemical reactions.........

Also, importantly, $DeltaG^@=-RTln{K_"eq"}$ (and again here $DeltaG^@$ must be negative to give $K_"eq">0$ .

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How can the Gibbs energy change of a reaction relate to entropy and enthalpy?

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