Question

Potential energy Reaction progress First, indicate on the diagram the activation energy, transition state, and the change of enthalpy for every step of this step-wise process, as well as the change in enthalpy for the overall reaction. Then, answer the following questions: (i) How many elementary steps are there in the mechanism of this reaction? (ii) Which of these steps is the rate-determining step? (iii) How many of the individual steps are exothermic? (iv) Is the overall reaction endothermic or exothermic? (v) How many intermediates are there in the mechanism? (vi) How many transition states are there in this mechanism? (vii) Which transition state is highest in energy? A. i) = 3 steps, ii) = 1" step (A to B), iii) = 2 steps, iv) = endothermic, v) - 3 intermediates, vi) - 2 transition states, vii) 2nd transition state B. i) = 4 steps, ii) = 2nd step (B to C), iii) - 2 steps, iv) = endothermic, v) = 2 intermediates, vi) = 2 transition states, vii) 1" transition state C. 1) - 3 steps, in) = 3rd step (C to D), iii) = 1 step, iv) = exothermic, v) = 2 intermediates, vi) - 3 transition states, vii) 1" transition state D. i) - 3 steps, ii) - 2nd step (B to C), iii) = 1 step, iv) = endothermic, v) - 2 intermediates, vi) = 3 transition states, vii) 2nd transition state E. i) = 4 steps, ii) = 2nd step (B to C), iii) = 1 step, iv) = exothermic, v) = 2 intermediates, vi)=2 transition states, vii) 2nd transition state F. 1) = 3 steps, ii) - 2nd step (B to C), iii) = 1 step, iv) - endothermic, y) = 2 intermediates, vi) - 3 transition states, vii) 3rd transition state

Answer 1

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