Butler–Volmer equation - 2023 ARCADIA

Question

This equation depends on a “charge transfer coefficient” that quantifies the asymmetry of the potential barrier. For 10 points each:

[10h] Name this doubly eponymous equation in electrochemical kinetics. This equation states that the current at an electrode is the sum of two contributions, one exponentially increasing in the voltage and one decaying.

ANSWER: Butler–Volmer equation

[10e] The electrode current cannot grow indefinitely with increasing voltage; it is eventually limited by the rate at which this process brings fresh reactants to the surface. This process transports species from high to low concentration.

ANSWER: diffusion

[10m] The rates are exponential in this quantity, symbolized eta. This quantity measures the difference between a reaction’s equilibrium potential and the potential of the electrode where it is occurring.

ANSWER: overpotential

<RA, Chemistry>

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Summary


2023 ARCADIA at UC Berkeley	Premiere	Y	2	10.00	100%	0%	0%
2023 ARCADIA at Carleton University	Premiere	Y	3	6.67	67%	0%	0%
2023 ARCADIA at Claremont Colleges	Premiere	Y	1	20.00	100%	100%	0%
2023 ARCADIA at Duke	Emory, Duke, Yale	Y	4	10.00	100%	0%	0%
2023 ARCADIA at Emory	Emory, Duke, Yale	Y	4	10.00	100%	0%	0%
2023 ARCADIA at Imperial	Imperial	Y	5	10.00	100%	0%	0%
2023 ARCADIA at Indiana	Premiere	Y	5	20.00	100%	60%	40%
2023 ARCADIA at Maryland	Maryland, Online	Y	3	10.00	100%	0%	0%
2023 ARCADIA at Ohio State	Ohio State, Texas	Y	3	10.00	100%	0%	0%
2023 ARCADIA Online	Maryland, Online	Y	3	26.67	100%	100%	67%
2023 ARCADIA at RIT	Premiere	Y	2	20.00	100%	50%	50%
2023 ARCADIA at Texas	Ohio State, Texas	Y	3	23.33	100%	67%	67%
2023 ARCADIA at WUSTL	Premiere	Y	3	16.67	100%	33%	33%

Data


NC State	North Carolina A	0	10	0	10
South Carolina B	James Madison B	0	10	0	10
Emory A	Georgia Tech D	0	10	0	10
Georgia B	Georgia A	0	10	0	10
Georgia Tech B	Georgia Tech A	0	10	0	10
Georgia Tech C	Tennesee A	0	10	0	10
Imperial A	Edinburgh	0	10	0	10
Illinois B	Indiana	10	10	10	30
Notre Dame B	Purdue B	0	10	0	10
Stanford A	Berkeley B	0	10	0	10
Waterloo	McDouble West-Carleton	0	10	0	10
SGV Capital	Auxiliary CLU	0	10	10	20
North Carolina B	Duke	0	10	0	10
South Carolina A	James Madison A	0	10	0	10
Johns Hopkins	George Washington B	0	10	0	10
Maryland A	Georgetown	0	10	0	10
George Washington A	Maryland B	0	10	0	10
Michigan B	Michigan A	0	10	0	10
Kenyon A	Ohio State A	0	10	0	10
Ohio State B	Kenyon B	0	10	0	10
Zen and the Art of Buzzing	Boston College	10	10	10	30
Farrellmagnetism	Ganon Evans Fan Club	0	10	10	20
MSU A and Friend	Arizona State	10	10	10	30
Berkeley A	Berkeley C	0	10	0	10
Ottawa C	Ottawa A	0	0	0	0
Toronto Ray of Sun in the Sky	Ottawa B	0	10	0	10
Birmingham	Warwick	0	10	0	10
Oxford	Cambridge B	0	10	0	10
Durham	Bristol	0	10	0	10
Cambridge A	Imperial B	0	10	0	10
Purdue A	Chicago A	0	10	10	20
Illinois A	Notre Dame A	10	10	10	30
Vanderbilt	Chicago B	0	10	0	10
Cornell MATLAB	RIT	0	10	0	10
Cornell R	Syracuse+Rochester	10	10	10	30
Texas B	HCC	10	10	10	30
TAG Magnet: Taylor's Version	TAMU	0	10	0	10
Texas A	Texas C	10	10	10	30
Missouri A	SIUE	0	10	10	20
Squidward Community College	WUSTL XYZ	10	10	0	20
WUSTL H2O	Missouri B	0	10	0	10