Physical Chemistry Third Edition

K Answers to Numerical Exercises and Odd-Numbered Numerical Problems 1319

5.27
P 2  92 .44 torr (modified equation)
P 2  93 .91 torr (original equation)
P 2  92 .51 torr (experiment)

5.29
P 2  148 .8 torr

5.31
a. ∆G 0
∆S 104 .6JK−^1
q25110 J
w1995 J
b. ∆G−4595 J
∆S 19 .14JK−^1
q−w4595 J

5.35
a. ∆slope− 21 .99JK−^1 mol−^1
b. ∆slope 0 .163 J bar−^1 mol−^1
c. ∆slope− 109 .0JK−^1 mol−^1
d. ∆slope3060 J bar−^1 mol−^1

5.39
h 0 .309 m 30 .9cm

5.41
h 0 .0421 m

5.43
F 0 .00357 N

5.45
a. P(l) 2. 16 × 105 Pa
b. Pvap 23 .776 torr

5.49
Γ 2  5. 7 × 10 −^6 mol m−^2
area 2. 91 × 10 −^19 m^2 molecule−^1

5.53
a. FALSE
b. TRUE
c.FALSE
d. TRUE
e.FALSE
f. FALSE
g. FALSE
h. TRUE
i.TRUE
j. FALSE
k. TRUE

Chapter 6 Exercises

6.7

x(benzene)≈ 0. 86

T(boil)≈357 K

6.9

k 1 985 torr

6.13

P 1. 47 × 106 PaP 14 .5 atm

6.14

a(I)i  0. 9513

γi(I) 1. 312

6.15

a(I)i  0. 9232

γi(I) 1. 026

6.17

I 0 .600 mol kg−^1

6.21

γ± 0. 902

%difference 0 .3%

6.28

x(Au)≈ 0. 88

6.31

b.

x^22

2

 5 × 10 −^5

x^32

3

 3. 33 × 10 −^7

c. −x 2 %difference

− 0. 100 5 .36%

− 0. 0100 0 .50%

− 0. 00100 0 .05%

− 0. 000100 0 .005%

6.33

∆T 0 .188 K

6.34

tb 100. 014 ◦C

6.35

a. P 1  0 .99947 atm101272 Pa

6.36

b. Π 6. 88 × 104 Pa 0 .679 atm

c. h 7 .01 m