November 29, 2024, 04:36:45 AM
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Topic: Thermodynamics  (Read 2410 times)

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Offline mreff555

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Thermodynamics
« on: August 21, 2009, 03:56:52 PM »
 So, I was just rearranged  :delta:S to  :delta:H/ :delta:S = T
I realized I could probably solve for temperature with that. eg. "heat of vaporization"
So I  looked up the thermodynamic data for water and subtracted the :delta:S and  :delta:H of the liquid state from the gas state. My result is close. I just would have expected it to be closer. Do you think the error is in the thermodynamic data or should I just be expecting more of an approximation with this stuff? The answer I got was 371.40K. Yes I know it's only a degree and a half off. Just curious why.

Offline sjb

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Re: Thermodynamics
« Reply #1 on: August 21, 2009, 04:01:47 PM »
Perhaps look into things like Trouton's rule, or similar. http://en.wikipedia.org/w/index.php?title=Trouton%27s_rule&oldid=309303595

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