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Explain in terms of entropy, why a reaction may not be feasible at high temperatures?

Can anyone explain why a reaction would only be feasible at low temperatures?
Original post by AqsaMx
Can anyone explain why a reaction would only be feasible at low temperatures?

Maybe try to explain it by using Gibbs free energy equation?
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Original post by Nirvana27
Maybe try to explain it by using Gibbs free energy equation?


I'm not sure how :/ any help?
Original post by AqsaMx
I'm not sure how :/ any help?


G=H -TS (so the free energy is equal to enthalpy change - (temp (in kelvin) times by entropy change)) for the reaction to be feasible/spontaneous G<0 less than zero (if I remember correctly). You can use this to link entropy and temperature to the feasibility of a reaction.
Feasibility determined by value of G. As poster above said, for a reaction to be feasible it has to be less than 0. Try plugging in different numbers for T and S and playing around with it to understand the effects it has.

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