Physical Chemistry Third Edition

K Answers to Numerical Exercises and Odd-Numbered Numerical Problems 1329

d. S 8. 87 × 10 −^13 s 8 .87 svedberg
e. t206 s

10.63

a. TRUE
b. FALSE
c.TRUE
d. FALSE
e.FALSE
f. TRUE
g. FALSE
h. TRUE

10.65
torque 0 .0079 N m

Chapter 11 Exercises

11.2

b. t 1 / 2 135 s
τ195 s

11.3
t 2. 4 × 109 yr

11.5

a. [NO 3 ] 0 .026 mol L−^1
b. [NO 3 ] 0 .034 mol L−^1
c. kf( press) 9. 15 × 10 −^5 atm−^1 s−^1
d. P(NO 3 ) 0 .558 atm

11.6

a. t 1 / 2 380 minutes
b. t 1 / 2  75 .8 minutes

11.7
t 15 t 1 / 2

11.8

d. t 21 t 1 / 2

11.9

a. t 66 .7s
b. t 1 / 2  33 .3s

11.12
b. t 1 / 2  0 .77 s
c. t 1 / 2  0 .015 s

11.19
[A] 0 .0986 mol L−^1
[B] 0 .0514 mol L−^1

Chapter 11 Problems

11.1

a. rate−

d[NO]

dt

 1. 42 × 10 −^4 mol L−^1 s−^1

b.

d[NO]

dt

− 1. 42 × 10 −^4 mol L−^1 s−^1

d[NOCl]

dt

 1. 42 × 10 −^4 mol L−^1 s−^1

d[Cl 2 ]

dt

− 7. 1 × 10 −^5 mol L−^1 s−^1

11.3

a. kf 0 .00276 s−^1

t 1 / 2 251 s

b. kf  0 .0361 L mol−^1 s−^1

t 1 / 2 278 s

11.5

At 10.00 s,P 0 .3437 bar

At 100.0s,P 2. 30 × 10 −^5 bar

11.7

a. t 1 / 2  3. 2 × 104 s

b. t 1. 05 × 105 s

11.9

first order,k 6. 25 × 10 −^4 s−^1

11.11

a. [A] 0 .0443 mol L−^1

b. [A] 0 .0357 mol L−^1

11.13

k 0 .008284 L^1 /^2 mol−^1 /^2 s−^1

11.15

a. [HI] 0 .0930 mol L−^1

b. t 1 / 2  1. 15 × 106 s

11.17

a. t 1 / 2  1. 19 × 105 s

b. t 3. 6 × 105 s

c. t 2. 3 × 106 s

11.19

The order with respect toAis 1/2

The order with respect toBis 1

The order with respect toCis 2

k 3 .79 L^5 /^2 mol−^5 /^2 min−^1