 Solution

ID: past-exam-of-the-chemistry-a-course-of-the-university-of-cambridge/2025/paper-2/a8/c/ii/1/solution

If the relevant ground manifolds have electronic degeneracies

g_{A}

g_{B}

and

g_{TS}

, and their components are treated as energetically degenerate, multiply the result by

\frac{g _{TS}}{g _{A} g _{B}} .

Only reactive transition-state electronic channels should be counted. Resolved electronic splittings require electronic partition functions rather than simple integer degeneracies.

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