Posted by richardm on November 6th, 2009
After a summary of some overarching thermodynamics concepts, we began to discus chemical kinetics. We looked at several ways to write the rate of a chemical reaction and the associated rate law.
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Posted by richardm on November 2nd, 2009
We explored a more complex binary system where the liquid is nearly ideal and there is limited solid solubility.
Exam 2 was also distributed. It is due in-class on Monday and must be returned in person.
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Posted by richardm on October 30th, 2009
We talked a bit more about ideal binary phase diagrams and the associated cooling curves. We then discussed the case of chemical interactions through the use of activity and the activity coefficient. Finally we started a discussion of a model on non-ideality, the regular solution model.
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Posted by richardm on October 30th, 2009
Our second exam will be a take-home exam. I will distribute the exam on Monday, November 2 and it must be returned in person at the beginning of class on Monday, November 9.
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Posted by richardm on October 28th, 2009
We saw how we can construct an ideal binary phase diagram (lens diagram) from our expression for the free energy of mixing of two ideal components. Our next step is to see what information this type of diagram gives us.
Solutions to Homework #7 have been posted, as well as last year’s Exam 2.
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Posted by richardm on October 26th, 2009
We developed the beginnings of an ideal binary phase diagram for a two component system that can exist in the solid and liquid phase.
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Posted by richardm on October 23rd, 2009
We explored homogeneous and heterogeneous nucleation of a solid from a liquid phase.
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Posted by richardm on October 21st, 2009
We completed two of three practice problems and then began to explore phase transitions in a qualitative manner.
A new homework was also distributed.
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Posted by richardm on October 19th, 2009
We derived the Clapeyron Equation to describe the coexistence curve for a single component system. This required a few assumptions which led us to the Clausius-Clapeyron Equation for the equilibrium between a condensed, pure phase and the vapor phase.
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Posted by richardm on October 19th, 2009
After finishing up the practice problems from last time, we took a look at phase equilibria in single component systems. This led to the construction of our first (of many) phase diagrams.
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