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

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1. Can anyone explain why a reaction would only be feasible at low temperatures?
2. (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?
3. (Original post by Nirvana27)
Maybe try to explain it by using Gibbs free energy equation?
I'm not sure how :/ any help?
4. (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.
5. 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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Updated: January 31, 2016
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