A \rightarrow D is an endothermic reaction occurring in three steps (elementary). (i) A \rightarrow B ∆ H _i=+ ve (ii) B \rightarrow C ∆ H _{i i}=- ve (iii) C \rightarrow D ∆ H _{i i i}=- ve Which of the following graphs between potential energy ( y-axis) vs reaction coordinate ( x-axis) correctly represents the reaction profile of A \rightarrow D ? [24 jan 2026 Shift 1]

Chemical Kinetics Part 2

Section: Chemistry

Question : 5 of 111

Marks: +1, -0

A⟶D is an endothermic reaction occurring in three steps (elementary).
(i) A⟶B∆Hi=+ve
(ii) B⟶C∆Hii=−ve
(iii) C⟶D∆Hiii=−ve
Which of the following graphs between potential energy ( y-axis) vs reaction coordinate ( x-axis) correctly represents the reaction profile of A⟶D ?

[24 jan 2026 Shift 1]

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