Total Entropy


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Total Entropy

Postby JukaKim_1D » Sun Feb 07, 2016 8:22 am

Why is it that a reaction is spontaneous if the total entropy is greater than zero but unpredictable if the entropy of the system is greater than 0? (Problem 9.73)

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Re: Total Entropy

Postby Chem_Mod » Mon Feb 08, 2016 1:40 pm

the deltaG of the system determines spontaneity. Recall that G=H-TS so even if the system increases in entropy, if the enthalpy is very unfavorable (endothermic, requiring input of energy), the process overall still could be non-spontaneous.

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