Arrhenius Constant

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AnikaMahavni_1B
Posts: 16
Joined: Fri Sep 25, 2015 3:00 am

Arrhenius Constant

Postby AnikaMahavni_1B » Fri Feb 26, 2016 9:41 pm

When we need to use the Arrhenius equation, will the Arrhenius constant (A) always be given to us? On homework problem 4.30 from the organic textbook, we are asked to determine whether or not a reaction will occur at room temp, without being given the Arrhenius constant. Is this something we should know how to do for the quiz or final?

Ronald Yang 2F
Posts: 86
Joined: Fri Sep 25, 2015 3:00 am

Re: Arrhenius Constant

Postby Ronald Yang 2F » Fri Feb 26, 2016 11:10 pm

Usually, the frequency factor A would be considered equal to 1 if not specified, making ln(A)=ln(1)=0, though this may not always be the case since it depends on the specific orientation of a collision. We usually will use the Arrhenius equation to compare two rate constants at their respective two temperatures.


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