Physical Chemistry Third Edition

K Answers to Numerical Exercises and Odd-Numbered Numerical Problems 1321

6.71
Tf 254 .2K

6.73

a. Π 3. 63 × 105 Pa 3 .58 atm

h 36 .3m

b. Π 3. 75 × 105 Pa 3 .70 atm

h 37 .5m

6.75
T′ 250 .8K− 22. 3 ◦C

6.77

Π1458 Pa 0 .0144 atm

∆Tf 1. 13 × 10 −^6 K

6.79

a. FALSE

b. FALSE

c.FALSE

d. TRUE

e.TRUE

f. TRUE

g. TRUE

h. TRUE

i.TRUE

j. TRUE

6.81

a. Kf 3 .14Kkgmol−^1

b. Tf 259 .9K

c. Tf 273 .15 K− 0 .300 K 272 .85 K

e. 2.94 parts of ethylene glycol to 1 part of water by

volume

Chapter 7 Exercises

7.1

a. ∆G◦ 20 .661 kJ mol−^1

b. ∆H◦ 71 .488 kJ mol−^1

∆S◦ 170 .473JK−^1 mol−^1

c.∆G◦ 20 .661 kJ mol−^1

d. ∆G◦ 20 .665 kJ mol−^1

7.3(

∂G

∂ξ

)

T,P

7527 J mol−^1

7.4

a. P(C 3 H 8 ) 7. 4 × 10 −^58 Pa

P(O 2 ) 3. 7 × 10 −^57 Pa

b. volume per molecule 5. 5 × 1036 m^3

7.5

∆G◦(II)− 558 .518 kJ mol−^1

7.6

V 1. 06 × 1047 m^3

7.7

m(H+)m(OH−) 1. 004 × 10 −^7 mol kg−^1

7.8

pH 11. 13

7.9

pH 2. 38

7.10

pH 1. 63

7.11

pH 5. 13

7.12

γ±(γ+^3 γ−^2 )^1 /^5

m±(m^3 +m^2 −)^1 /^5 m(3^322 )^1 /^5  2 .55085 m

7.14

a. pH 3. 91

b. pH 3. 91

7.18

K(1000 K) 0. 098

7.19

b. K 14. 8

∆G◦− 8 .37 kJ mol−^1

7.20

α− 0 .4826 (unacceptable)

7.21

∆pH 6. 47

7.22

(∂G/∂ξ)T,P− 37 .3kJmol−^1

7.23

c(ATP) 0 .00993 mol L−^1

7.24

b. ∆G◦

′

− 9 .9kJmol−^1

K 54