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Carl McBride (talk | contribs) m (Added mention of inexact differentials) |
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:<math>\delta Q= TdS</math> | :<math>\delta Q= TdS</math> | ||
where ''T'' is the [[temperature]] and ''S'' is the [[entropy]]. <math>\delta</math> represents an [http://mathworld.wolfram.com/InexactDifferential.html inexact differential], indicating that the resulting value depends on the path taken. | where ''T'' is the [[temperature]] and ''S'' is the [[entropy]]. <math>\delta</math> represents an [http://mathworld.wolfram.com/InexactDifferential.html inexact differential], indicating that the resulting value depends on the path taken. This equation results in an equality then the process is reversible. If the process is irreversible one has | ||
:<math>\delta Q < TdS</math> | |||
==See also== | ==See also== | ||
*[[First law of thermodynamics]] | *[[First law of thermodynamics]] | ||
*[[Second law of thermodynamics]] | |||
*[[Heat flow]] | *[[Heat flow]] | ||
==References== | ==References== | ||
<references/> | |||
;Related reading | |||
*[http://dx.doi.org/10.1021/ed047p357 Leonard K. Nash "Reversible and irreversible heating and cooling", Journal of Chemical Education '''47''' pp. 357-361 (1970)] | |||
[[category: classical mechanics]] | [[category: classical mechanics]] | ||
[[category: statistical mechanics]] | [[category: statistical mechanics]] | ||
Revision as of 14:00, 4 July 2011
The heat, Q is given by
where T is the temperature and S is the entropy. represents an inexact differential, indicating that the resulting value depends on the path taken. This equation results in an equality then the process is reversible. If the process is irreversible one has
See also
References
- Related reading