7
QuizMultiple Choice

Reaction Pathways

Question 7 • Chemistry - SC3210 A-CR

Which statement best describes the reaction pathway graph for endothermic reactions?

Answer
A
mainly downhill
B
always linear
C
always parabolic
D
mainly uphill

Explanation

In an endothermic reaction, the products have more energy than the reactants because energy is absorbed overall. On a reaction pathway graph, this means the pathway ends at a higher energy level than it begins, so it is mainly uphill. “Mainly downhill” describes an overall energy decrease, typical of an exothermic reaction.

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