JAMB Chemistry 2007 Objective — Question 25

Question 25 of 50 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2007 Objective paper, with the correct answer and a full explanation.

C2H4(g) + H2(g) -> C2H6(g), delta H = -137kJ/mol. The reaction represented above is

A. endothermic
B. exothermicCorrect
C. in equilibrium
D. spontaneous

Explanation

A negative delta H indicates heat is released, characteristic of an exothermic reaction.

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