Angular dependence

Arrhenius Equation:

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Malia Shitabata 1F
Posts: 127
Joined: Sat Aug 17, 2019 12:17 am

Angular dependence

Postby Malia Shitabata 1F » Tue Mar 10, 2020 5:20 pm

I wrote in my notes from the temperature and reaction rate section that the stricter the angular dependence, the bigger k is and if angular dependence is lower, A is lower. I'm not sure I wrote that down right. Can someone confirm?

AArmellini_1I
Posts: 107
Joined: Fri Aug 09, 2019 12:15 am

Re: Angular dependence

Postby AArmellini_1I » Tue Mar 10, 2020 5:30 pm

Do you mean the lower the activation energy the greater k and the higher the activation energy the smaller k is?

Daria Azizad 1K
Posts: 116
Joined: Thu Jul 25, 2019 12:15 am

Re: Angular dependence

Postby Daria Azizad 1K » Tue Mar 10, 2020 6:13 pm

The angular dependence is taken into account by the pre-exponential factor, A, which you can think of as the likelihood/probability of a rxn happening based on a collision. So when A is large, k is larger, and when A is smaller, k is smaller because k and A are directly related thru the Arrhenius eqn.


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