Physical Chemistry Third Edition

1318 K Answers to Numerical Exercises and Odd-Numbered Numerical Problems

d. c 2
e.c 2
f. c 1
g. c 2

5.4
P 2 −P 1  1. 350 × 106 Pa 13 .32 atm

5.5
P 2 −P 1  13 .32 atm

5.6
Vm(liquid) 1. 80 × 10 −^5 m^3 mol−^1
Vm(gas) 3. 06 × 10 −^2 m^3 mol−^1

5.8
P 2  2 .226 atm1692 torr 2 .255 bar

5.9
P 2  0 .666 atm506 torr 67 .5 kPa

5.10
P 2 ′328000 Pa 3 .24 atm2460 torr

5.12
Tc5074 K

5.13
a. γ 0 .142Jm−^2
b. ratio 8. 5 × 10 −^9

5.14
h 0 .00050 m 0 .50 mm

5.15
h− 0 .0131 m− 13 .1mm

5.16
P 2  23 .753 torr

Chapter 5 Problems

5.1
G
(l)
m−G

(s)
m ^0
A
(l)
m−A

(s)

m −^0 .167 J mol

− 1

H
(l)
m −H

(s)

m 6006 J mol

− 1

Um(l)−Um(s)6006 J mol−^1

S
(l)
m −S

(s)

m ^21 .99JK

− (^1) mol−^1
5.3
G(g)m −G(l)m  0
A
(g)
m −A
(l)
m−^2 .479 kJ mol
− 1
H
(g)
m −H
(l)
m ^44 .010 kJ mol
− 1
U
(g)
m −U
(l)
m ^41 .531 kJ mol
− 1
S
(g)
m −S
(l)
m ^147 .6JK
− (^1) mol− 1
5.5
a. f 3
b. f 2
c. f 3
d. f 2
e. f 0
5.7
a. c2,f 3
b. c1,f 1
c. c2,f 2
5.9
P−P◦ 1. 506 × 109 Pa
5.13
a. T 2  239 .5K,tC− 33. 6 ◦C
b. ∆vapHm24400 J mol−^1
5.15
a. ∆subHm25900 J mol−^1
b. T 194 .6K
5.17
a. P 1 .95 atm
P(gauge) 0 .95 atm 13 .9 psig
b. Tf 273 .145 K
tCf− 0. 00488 ◦C
5.19
T 367 .9K
tC 94. 7 ◦C
5.21
a. ∆vapHm 42 .7kJmol−^1
b. P 2  182 .6 torr
5.23
∆subHm 26 .1kJmol−^1
5.25
∆Hvap 259 .4kJmol−^1