ChemistryEnergy changesWAEC
Which combination makes a reaction spontaneous (ΔG negative) at every temperature?
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Answer: B. negative ΔH and positive ΔS
ΔG = ΔH − TΔS is negative at all T only when ΔH is negative and ΔS positive.
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.