Question

Because this process favors Marcus–Coltrin paths on the concave side of a reaction pathway, it drives the “bobsled effect.” In transition state theory, this process’s impact on rate is added as a fudge factor using a zero-curvature approximation. Very high kinetic isotope effects that are not (10[1])temperature-dependent indicate that this process controls a reaction’s rate. (-5[1])For reactions that rely on this process, (10[1])such as proton tautomer·ization or amine racemization, (10[1])a factor symbolized (-5[1])capital Q is added to the Arrhenius equation. (10[2])This process accelerates DNA muta·genesis and speeds (10[1])up alcohol de·hydrogen·ase in two examples (10[1])of quantum biology. (10[1])This process allows (10[2])a helium nucleus to escape a huge (10[1])electrostatic (10[2])potential in (10[1])Gamow’s (10[3])(“GAM-ovs”) theory (10[1])of alpha decay. (10[1])For 10 (10[1])points, name this process that speeds up reactions by allowing particles to pass under the activation energy (10[1])barrier. (10[1])■END■ (10[2]0[1])

ANSWER: quantum tunneling [or tunnel effect; prompt on pyramidal inversion or umbrella inversion by asking “what physical process is the mechanism?”]
<Chemistry>
= Average correct buzz position

Summary

2023 ACF Nationals04/22/2023Y24100%0%8%101.00

Buzzes

PlayerTeamOpponentBuzz PositionValue
Geoffrey ChenCornell AStanford A4510
Dan NiCornell BToronto A54-5
Daniel YangChicago BDuke A6110
Daniel SheinbergYale AFlorida A6810
Ethan AshbrookMinnesota AMIT A71-5
Alex LiGeorgia Tech AMaryland A7910
Jason HongBrown AWUSTL A7910
Raul PassementTexas AIndiana A8610
Swapnil GargUC Berkeley ANorthwestern A9210
June YinWUSTL BRutgers A9510
Geoffrey WuColumbia AHarvard A9810
Vincent DuNorth Carolina AChicago C9810
Adam FineChicago AOhio State A10510
Conor ThompsonIowa State AClaremont A10610
Matthew SiffYale BGeorgia Tech B10610
Andrew HannaVanderbilt AUC Berkeley B10810
Danny HanPenn AIllinois A10910
Forrest WeintraubColumbia BRutgers B10910
Isak JatoiSouth Carolina AMcGill A10910
Maximillian NieburJohns Hopkins AFlorida B11010
Matt SchiavonePurdue AMinnesota B11310
David BassVirginia APenn State A11510
Michael MaysImperial ANYU A13210
Katherine LeiMIT AMinnesota A13310
Todd MaslykMichigan AHouston A13410
Sky LiToronto ACornell B13410
Sean DoyleHouston AMichigan A1340