Explain briefly why (a) The change in entropy in a system is not always a suitable criterion for spontaneous change (b) r G is so important in dealing with the question of spontaneous change, even though the conditions employed in a reaction are very often nonstandard ...

a Entropy is a measure of the disorder or randomness of a system The second law of thermodynamics states that the total entropy of the universe always ...

Explain briefly why (a) The change in entropy in a system is not always a suitable criterion

Question:

Explain briefly why

(a) The change in entropy in a system is not always a suitable criterion for spontaneous change;

(b) Δ_rG° is so important in dealing with the question of spontaneous change, even though the conditions employed in a reaction are very often nonstandard.

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