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Topic: reactions  (Read 4676 times)

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Offline ixi

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reactions
« on: December 06, 2007, 08:57:04 PM »
d/dt= KA[A]0e^(-KAt)-KI
the book says this is a differential equation that when solved yields the following expression for

= (KA/(KI-KA))(e^(-KAT)-e^(-KIT)) [A]O

what do i do to get this? I think i have to take the derivative of the first equation...? i'm not sure where to get started 

Offline Padfoot

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Re: reactions
« Reply #1 on: December 06, 2007, 09:44:23 PM »
d/dt= KA[A]0e^(-KAt)-KI
what do i do to get this? I think i have to take the derivative of the first
Solving a differential equation usually means finding the integral.

Integrating exponentials: http://www.math.ucdavis.edu/~kouba/CalcTwoDIRECTORY/expondirectory/Exponentials.html

This post probably belongs in the Math Forum though...

Offline ixi

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Re: reactions
« Reply #2 on: December 07, 2007, 02:24:12 PM »
i found the solution in another p.chem text. thanks for the link though

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