Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:Given that the molar entropy of a gas is:
(+)
SN=Na = R + Rln
SN=Na = R + Rln
((² *²
+ RT
i) Show that the molar entropy of a monatomic ideal gas (ignore electronic energy
for now) can be written as (P is pressure):
12 * π *m*
h²
d(ln(q)))
dT
* T
KB
3/2
*
R* T
V
Navog
* P
3
+-R
ii) Calculate the molar entropy of Xe(g) at 298.15 K and compare this to the literature
value.
iii) Show that the change in entropy due to expansion for an ideal, monatomic gas is
the same when using either a partition function approach or a thermodynamic
approach.
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