Calculating A for the Arrhenius Equation, quest. 15.63

Arrhenius Equation:

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Jake Ney lecture 1 discussion 1F
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Joined: Fri Sep 25, 2015 3:00 am

Calculating A for the Arrhenius Equation, quest. 15.63

Postby Jake Ney lecture 1 discussion 1F » Sat Feb 20, 2016 6:55 pm

15.63 asks: The rate constant of the reaction between CO2 and OH- in aqueous solution to give the HCO3- ion is 1.5x10^10 L/mol*s at 25 degree C. Determine the rate constant at blood temperature (37 degree C), given that the activation energy for the reaction is 38 kJ/mol*s.

I'm assuming that you plug the given values into the Arrhenius Equation to solve for K, but how do you first determine [A], and which compound (CO2, OH- or HCO3-) do we need the concentration of?

Lisa Leung 2H
Posts: 23
Joined: Fri Sep 25, 2015 3:00 am

Re: Calculating A for the Arrhenius Equation, quest. 15.63

Postby Lisa Leung 2H » Sun Feb 21, 2016 1:59 pm

You will have the Arrhenius equations for the two temperatures and subtract the two. So, at T1: and at T2: . lnA is eliminated when we subtract the two equations and we get .
Hope this helps!


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