JAMB Chemistry 2020 Objective — Question 19

Question 19 of 40 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2020 Objective paper, with the correct answer and a full explanation.

19. A chemical reaction proceeds with increase in both enthalpy and entropy. The reaction will be spontaneous if

A. A. ΔH=TΔS
B. B. ΔH<TΔSCorrect
C. C. ΔH>TΔS
D. D. None of these

Explanation

A reaction is spontaneous when ΔG=ΔH-TΔS is negative, i.e. when TΔS > ΔH, so ΔH < TΔS.

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