rate constant - 2023 Chicago Open

Question

In the Marcus inverted region, this quantity’s logarithm surprisingly increases with the square of standard free energy change. For 10 points each:

[10e] Name this quantity given as the transmission coefficient times k B T over h, times the negative exponential of “free energy of activation over k B T,” per the Eyring equation.

ANSWER: rate constant

[10h] In Marcus theory, this expression approximates the free energy of activation for outer-sphere electron transfer. This expression can be derived by setting standard free energy change to zero in the Marcus equation.

ANSWER: solvent reorganization energy over four [or one-fourth the solvent reorganization energy or equivalents; accept lambda sub S over four or equivalents; reject partial answers]

[10m] From this result, an expression can be derived that sets the rate constant for electron transfer equal to two pi over h-bar, times an electronic term, times the Franck-Condon-weighted density of states. This result states that transition rate is proportional to the square of a matrix element.

ANSWER: Fermi’s golden rule [or the golden rule of time-dependent perturbation theory]

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Summary


2023 Chicago Open	08/05/2023	Y	9	12.22	44%	78%	0%

Data


BHSU	The anti-STOON-dahl cabal (the tall Keyal et al.)	10	10	20
The Catastrophic Implosion of Packet Sub	Don't be Afraid, the Clown's Afraid Too	0	10	10
Evans Hall destruction awaiters	Hang et al., Robert Browning	0	10	10
Quasicrystal Silence	I would prefer not to	10	10	20
Team Name Think Detail	remembrance of lost time	0	10	10
I prefer really not to speak. If I speak I’m in big trouble	Romanos IV Diogenes’ Macaroni Grill	10	10	20
In Search of Things Past	Saint Peter Andre 3000	0	0	0
Teach Us to Outgrow Our Ladness	[moderator voice] yes that is so tenpointscore! is your team feeling bonuspilled?	0	10	10
The Canadians	The Plague (anime)" was redirected to: "Oran High School Host Club	10	0	10