Question #288304

For a reaction that has ∆H of -30 kJ and ∆S of -62 J/K, estimate at what temperature will the reaction change from spontaneous to non-spontaneous reaction?


1
Expert's answer
2022-01-24T11:20:25-0500

Now We know that

H=30KJS=62J/K∆H=-30KJ\\∆S=-62J/K

Now

G=HTS∆G=∆H-T∆S

G>0∆G>0 Non spontaneous

G<0∆G<0 spontaneous

G=0∆G=0 equilibrium

HTS>0∆H-T∆S>0

T<HST<483.87KT<\frac{∆H}{∆S}\\T<483.87K

equilibrium temperature

T=3000062=483.87KT=\frac{-30000}{-62}=483.87K

Spontaneous temperature

T>483.87KT>483.87K


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