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Atkins' Physical Chemistry | 11th Edition | ISBN: 9780198769866 | Authors: Atkins, Peter; De Paula, Julio; Keeler, James ISBN: 9780198769866 2042

Solution for problem P13E.6 Chapter 13E

Atkins' Physical Chemistry | 11th Edition

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Atkins' Physical Chemistry | 11th Edition | ISBN: 9780198769866 | Authors: Atkins, Peter; De Paula, Julio; Keeler, James

Atkins' Physical Chemistry | 11th Edition

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Problem P13E.6

Plot the function dS/dT for a two-level system, the temperature coefficient of its entropy, against \(k T / \varepsilon\). Is there a temperature at which this coefficient passes through a maximum? If you find a maximum, explain its physical origins.

Text Transcription:

kT/varepsilon

Step-by-Step Solution:
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1. An open tubular gas chromatography column is 35.7 m long and has an inner diameter of 0.250 mm. It is coated on the inside wall with a layer of stationary phase that is 1.8 µm (0.0018 mm) thick. Unretained solute, methane, passes through in 6.39 min, whereas toluene has a retention time of 16.35 min. 2. Listed in the table of chromatographic data below are the retention times and peak widths for a chromatographic separation carried out on a 10.0 cm column. Calculate the plate height, in millimeters, for pyrene. Compound Time (min) Width 1/2n) Unretained 0.90 ­ Benzene 10.90 0.400 Benzo[e]pyrene 13.30 0.400 Pyrene 16.70 0.450 Coronene 26.10 0.500 3 3. Two species, A and B, are separated on a 2.00 m long column which has 5.000 x 10 plates when the flow rate is 15.0 mL/min. A species that is non­absorbing and known not

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Chapter 13E, Problem P13E.6 is Solved
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Textbook: Atkins' Physical Chemistry
Edition: 11
Author: Atkins, Peter; De Paula, Julio; Keeler, James
ISBN: 9780198769866

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