bmb428_problemset13 - BMB428 Physical Chemistry with...

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BMB428 Dr. Song Tan Physical Chemistry with Biological Applications Fall 2007 1 Problem Set 13: Chemical Equilibrium Due Oct 16, 2007 1. There are a number of different types of equilibria. In each case, the mathematical definition is that the rate of change is zero. However, the various types of equilibria differ depending on what happens if you perturb the system. For example, a stable equilbrium is defined as an equilibrium which returns to the same location after either a small or a large perturbation of the system. The picture you can associate with this type of equilibrium is of a ball in a steep valley: Even if the ball is pushed far up the side of the valley, it will return to the bottom once it is released. In thermodynamics, you have to worry about two additional types of equilibria. The first type is unstable equilibrium. In this case, a small displacement from the equilibrium causes a large change in the final position. The second type is a metastable equilibrium. In this case, a small perturbation of
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This note was uploaded on 07/23/2008 for the course BMB 428 taught by Professor Tan during the Fall '07 term at Pennsylvania State University, University Park.

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bmb428_problemset13 - BMB428 Physical Chemistry with...

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