A?

Arrhenius Equation:

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Rachel Wang
Posts: 49
Joined: Fri Sep 29, 2017 7:04 am

A?

Postby Rachel Wang » Fri Mar 16, 2018 6:34 pm

Does A stay the same even if activation energy or k changes, as long as temperature is the same?
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Andrea Grigsby 1I
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Joined: Fri Sep 29, 2017 7:03 am

Re: A?

Postby Andrea Grigsby 1I » Fri Mar 16, 2018 7:06 pm

yes, it is a constant
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704887365
Posts: 49
Joined: Sat Jul 22, 2017 3:00 am

Re: A?

Postby 704887365 » Fri Mar 16, 2018 7:38 pm

Yes, A will always stay the same
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Rachel N 1I
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Joined: Thu Jul 27, 2017 3:00 am

Re: A?

Postby Rachel N 1I » Fri Mar 16, 2018 11:34 pm

So is A affected by temperature or nearly independent of it?
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Vincent Chiang 1L
Posts: 54
Joined: Fri Sep 29, 2017 7:05 am

Re: A?

Postby Vincent Chiang 1L » Sat Mar 17, 2018 3:51 am

If T increases, k increases, and if k increases, A increases. This should mean that as T increases, A should increase.
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DamianW
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Joined: Fri Sep 29, 2017 7:06 am

Re: A?

Postby DamianW » Sat Mar 17, 2018 3:18 pm

is that why you can subtract them?
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Varsha Swamy 2J
Posts: 14
Joined: Sat Jul 22, 2017 3:00 am

Re: A?

Postby Varsha Swamy 2J » Sat Mar 17, 2018 3:26 pm

Yep, I think the fact that it is constant (in general) is the reason it can be subtracted out of the equation when combining two Arrhenius equations to predict k1 using k2, T2, and T1.
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