hw8 - PHYS 333 Winter 2009 Assignment 8 Due: 5:00 pm Friday...

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Unformatted text preview: PHYS 333 Winter 2009 Assignment 8 Due: 5:00 pm Friday March 27 1. A question on Osmosis. For this problem you need two additions to the theory of osmosis found in the textbook (page 203) and discussed in class. They are that: the chemical potential of a solvent containing two dilute solutes is = - k B T ( x 1 + x 2 ) where x 1 and x 2 are the respective concentrations. in the presence of an electrostatic potential , the chemical potential of the positive (negative) ions is increased (decreased) by e , where e is the magnitude of the charge per ion. Note also that the concentration x is defined as the ratio of the number of molecules of solute to the number of water molecules (solvent). Likewise, the concentration of ions is defined as the ratio of the number of ions to the number of water molecules. Two containers A and B, of equal volume, are full of water. Both contain N molecules of water. They are connected by a semi-permeable membrane. In the first part of an experiment, a dilute concentration x of NaF is introduced into the container A. The NaF completely dissociates into Na + and F- ions, and both Na + and F- ions can pass through the membrane....
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This note was uploaded on 04/11/2010 for the course PHYS 333 taught by Professor Harris during the Winter '09 term at McGill.

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hw8 - PHYS 333 Winter 2009 Assignment 8 Due: 5:00 pm Friday...

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