JAMB Chemistry 2017 Objective — Question 39

Question 39 of 40 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2017 Objective paper, with the correct answer and a full explanation.

X(g) + 3Y(g) ⇌ 2Z(g), ΔH = +Ve. If the reaction above takes place at room temperature, the ΔG will be

A. A. negative
B. B. zero
C. C. positive
D. D. indeterminate without further dataCorrect

Explanation

ΔG = ΔH - TΔS depends on both the enthalpy change and the entropy term, so its sign cannot be determined from ΔH alone.

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