thermodynamics question

[ginda770]

if given enropy S as a function of energy U how do i tell that is obeys the second postulate?

[ginda770]

is there no one who can help?

[dizco29]

i had the same question lol

[Andrew Mason]

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

[ginda770]

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

[djtchong]

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