PHYSICAL CHEMISTRY. VOL.1+2 (LL)(11TH)
11th Edition
ISBN: 9780198826910
Author: ATKINS
Publisher: Oxford University Press
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Chapter 4, Problem 4B.7BE
Interpretation Introduction
Interpretation: The enthalpy of vaporization of the liquid has to be predicted.
Concept introduction: Energy needed to transform the liquid state of a substance to its gaseous state is known as the enthalpy of vaporization of the system. Enthalpy of vaporization of a system is calculated by the Clausius-Clapeyron’s formula.
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LTS
Solid:
AT=Te-Ti
Trial 1
Trial 2
Trial 3
Average
ΔΗ
Mass water, g
24.096
23.976
23.975
Moles of solid, mol
0.01763
001767
0101781
Temp. change, °C
2.9°C
11700
2.0°C
Heat of reaction, J
-292.37J -170.473
-193.26J
AH, kJ/mole
16.58K 9.647 kJ 10.85 kr
16.58K59.64701
KJ
mol
12.35k
Minimum AS,
J/mol K
41.582
mol-k
Remember: q = mCsAT (m = mass of water, Cs=4.184J/g°C) & qsin =-qrxn &
Show your calculations for:
AH in J and then in kJ/mole for Trial 1:
qa (24.0969)(4.1845/g) (-2.9°C)=-292.37J
qsin =
qrxn =
292.35 292.37J
AH in J = 292.375 0.2923kJ
0.01763m01
=1.65×107
AH in kJ/mol =
=
16.58K
0.01763mol
mol
qrx
Minimum AS in J/mol K (Hint: use the average initial temperature of the three trials, con
Kelvin.)
AS=AHIT
(1.65×10(9.64×103) + (1.0
Jimai
For the compound: C8H17NO2
Use the following information to come up with a plausible structure:
8
This compound has "carboxylic acid amide" and ether functional groups.
The peaks at 1.2ppm are two signals that are overlapping one another.
One of the two signals is a doublet that represents 6 hydrogens; the
other signal is a quartet that represents 3 hydrogens.
Vnk the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest bolling
point, choose 2 next to the substance with the next highest boiling point, and so on.
substance
C
D
chemical symbol,
chemical formula
or Lewis structure.
CH,-N-CH,
CH,
H
H 10: H
C-C-H
H H H
Cale
H 10:
H-C-C-N-CH,
Bri
CH,
boiling point
(C)
Сен
(C) B
(Choose
Chapter 4 Solutions
PHYSICAL CHEMISTRY. VOL.1+2 (LL)(11TH)
Ch. 4 - Prob. 4B.1STCh. 4 - Prob. 4B.2STCh. 4 - Prob. 4A.1DQCh. 4 - Prob. 4A.2DQCh. 4 - Prob. 4A.3DQCh. 4 - Prob. 4A.1AECh. 4 - Prob. 4A.1BECh. 4 - Prob. 4A.2AECh. 4 - Prob. 4A.2BECh. 4 - Prob. 4A.3AE
Ch. 4 - Prob. 4A.3BECh. 4 - Prob. 4A.4AECh. 4 - Prob. 4A.4BECh. 4 - Prob. 4A.5AECh. 4 - Prob. 4A.5BECh. 4 - Prob. 4A.1PCh. 4 - Prob. 4A.2PCh. 4 - Prob. 4A.3PCh. 4 - Prob. 4A.4PCh. 4 - Prob. 4B.1DQCh. 4 - Prob. 4B.2DQCh. 4 - Prob. 4B.3DQCh. 4 - Prob. 4B.1AECh. 4 - Prob. 4B.1BECh. 4 - Prob. 4B.2AECh. 4 - Prob. 4B.2BECh. 4 - Prob. 4B.3AECh. 4 - Prob. 4B.3BECh. 4 - Prob. 4B.4AECh. 4 - Prob. 4B.4BECh. 4 - Prob. 4B.5AECh. 4 - Prob. 4B.5BECh. 4 - Prob. 4B.6AECh. 4 - Prob. 4B.6BECh. 4 - Prob. 4B.7AECh. 4 - Prob. 4B.7BECh. 4 - Prob. 4B.8AECh. 4 - Prob. 4B.8BECh. 4 - Prob. 4B.9AECh. 4 - Prob. 4B.9BECh. 4 - Prob. 4B.10AECh. 4 - Prob. 4B.10BECh. 4 - Prob. 4B.11AECh. 4 - Prob. 4B.11BECh. 4 - Prob. 4B.12AECh. 4 - Prob. 4B.12BECh. 4 - Prob. 4B.13AECh. 4 - Prob. 4B.13BECh. 4 - Prob. 4B.14AECh. 4 - Prob. 4B.14BECh. 4 - Prob. 4B.1PCh. 4 - Prob. 4B.2PCh. 4 - Prob. 4B.3PCh. 4 - Prob. 4B.4PCh. 4 - Prob. 4B.5PCh. 4 - Prob. 4B.6PCh. 4 - Prob. 4B.7PCh. 4 - Prob. 4B.8PCh. 4 - Prob. 4B.9PCh. 4 - Prob. 4B.10PCh. 4 - Prob. 4B.11PCh. 4 - Prob. 4B.12PCh. 4 - Prob. 4B.13PCh. 4 - Prob. 4B.14PCh. 4 - Prob. 4B.15PCh. 4 - Prob. 4B.16PCh. 4 - Prob. 4.1IACh. 4 - Prob. 4.3IACh. 4 - Prob. 4.4IA
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