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Topic: Thermal Expansion Coefficient  (Read 4805 times)

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Offline ehFk

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Thermal Expansion Coefficient
« on: October 16, 2008, 01:58:04 PM »
I was wondering if someone could explain the volumetric thermal expansion coefficent, and what exactly the equation β=1/V(∂V/∂T)p represents.
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Offline Hunt

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Re: Thermal Expansion Coefficient
« Reply #1 on: October 18, 2008, 10:07:24 AM »
It shows the tendency of a certain material to expand / contract as a function of temperature.

http://en.wikipedia.org/wiki/Coefficient_of_thermal_expansion
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Offline ehFk

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Re: Thermal Expansion Coefficient
« Reply #2 on: October 19, 2008, 08:27:00 PM »
So does that mean a gas is likely to have a great Beta than a solid?
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Offline Hunt

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Re: Thermal Expansion Coefficient
« Reply #3 on: October 20, 2008, 12:43:34 PM »
Yes because the expansion/compression of a gas as a function of temperature is far greater than that of a condensed phase such as a solid. Infact in several elementary applications of chemical thermodynamics , beta is assumed to be zero for solids.
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Offline Missthelab

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Re: Thermal Expansion Coefficient
« Reply #4 on: December 13, 2008, 04:20:40 PM »
In addition, in the equation you presented, it is relevant to note that the system in under constant pressure.
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