Lecture 23: Diffusion: Fick's First Law and Steady-state Diffusion, Dependence of the Diffusion Coefficient on Temperature and on Atomic Arrangement
recorded by: Massachusetts Institute of Technology, MIT
published: Feb. 10, 2009, recorded: November 2004, views: 17978
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"The specific chemical rate constant, k, is the proportionality. And, k can be influenced by temperature through this Arrhenius type relationship, which compares the exponential of the activation energy with the available thermal energy.
And, we saw that we can integrate that rate equation, and put the data to the test. If we have a first-order reaction, we should get a semi-log dependence. And, I think I've got that shown here. Here's the data that I showed you last day.
This is just a normal decrease in concentration with time, typical attenuation curve. If we put it to the first-order test, according to this relationship we should get a straight line with a slope of minus k..."
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