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A?

Posted: Fri Mar 16, 2018 6:34 pm
by Rachel Wang
Does A stay the same even if activation energy or k changes, as long as temperature is the same?

Re: A?

Posted: Fri Mar 16, 2018 7:06 pm
by Andrea Grigsby 1I
yes, it is a constant

Re: A?

Posted: Fri Mar 16, 2018 7:38 pm
by 704887365
Yes, A will always stay the same

Re: A?

Posted: Fri Mar 16, 2018 11:34 pm
by Rachel N 1I
So is A affected by temperature or nearly independent of it?

Re: A?

Posted: Sat Mar 17, 2018 3:51 am
by Vincent Chiang 1L
If T increases, k increases, and if k increases, A increases. This should mean that as T increases, A should increase.

Re: A?

Posted: Sat Mar 17, 2018 3:18 pm
by DamianW
is that why you can subtract them?

Re: A?

Posted: Sat Mar 17, 2018 3:26 pm
by Varsha Swamy 2J
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.