Kinetic Control

Arrhenius Equation:

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Amir Bayat
Posts: 115
Joined: Sat Sep 07, 2019 12:16 am

Kinetic Control

Postby Amir Bayat » Fri Mar 13, 2020 8:21 pm

Why is it that kinetic control predominates at low temperatures and that the reaction pathway with the lower activation energy will predominate at low temperature?

Ryan Yee 1J
Posts: 101
Joined: Sat Aug 17, 2019 12:16 am

Re: Kinetic Control

Postby Ryan Yee 1J » Fri Mar 13, 2020 8:35 pm

At low temperatures, thermodynamic control is unfavorable. (Think deltaG=deltaH-t(deltaS)) and increasing temperature would put more favor towards thermodynamic control. Additionally, at lower temperatures, the pathway with lower activation energy is favored because more molecules are able to hit the activation energy required for reactants to turn into products (as temperature is a measure of average kinetic energy).

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