For which of the reactions listed below will Gibbs free energy always be negative?

A. An exothermic reaction that increases in entropy
B. An endothermic reaction that decreases in entropy
C. An endothermic reaction that increases in entropy
D. An exothermic reaction that decreases in entropy

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  1. Isn't that A?
    dG = dH - TdS.
    If dH is - and dS is +, then -TdS will be negative; thus dG will ALWAYS be negative.

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  2. it's actually endothermic reaction that decreases in entropy.

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  3. It's A

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  4. I did this question for my ap chemistry class and the correct answer is A.

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