Is S as a function of U consistent with the second law of thermodynamics?

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Homework Help Overview

The discussion revolves around the relationship between entropy (S) as a function of energy (U) and its consistency with the second law of thermodynamics. Participants are exploring how to determine if a given entropy function adheres to this law.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are questioning how to assess whether an entropy function complies with the second law of thermodynamics. There are mentions of specific entropy functions and their implications regarding the maximization of entropy.

Discussion Status

The discussion includes various interpretations of the second law and its application to entropy functions. Some participants express uncertainty about terminology and concepts, while others reference specific equations related to ideal gases. There is no explicit consensus on the interpretation of the second law or the criteria for compliance.

Contextual Notes

Participants mention differing definitions of postulates and laws in their coursework, indicating potential confusion about terminology. There is also a reference to specific examples of entropy functions provided in class, which may influence their understanding of the topic.

ginda770
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if given enropy S as a function of energy U how do i tell that is obeys the second postulate?
 
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is there no one who can help?
 
i had the same question lol
 
ginda770 said:
if given enropy S as a function of energy U how do i tell that is obeys the second postulate?
I am not sure what you mean by the second postulate. Do you mean the second law of Thermodynamics? (it is not a postulate).

AM
 
in our class there were 4 postulates. the second was that entropy is maximized. we were given a few entropy functions and had to decide which ones violated the second postulate
 
S given as a function of U doesn not violate the second law of thermodynamics..because S IS a function of U...
look up the Sackure-Tetrode Equation for a monatomic ideal gas
 

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