Thermodynamics and Chemistry

Appendix I Answers to Selected Problems

Appendix I Answers to Selected Problems

3.3(b)qDwD1:00 105 J

3.4 (c)wD1:99 103 J,qD1:99 103 J.

3.5 0:0079%

3.6 (c)V 2 !nRV 1 =.CVCnR/,T 2! 1.

ForCVD.3=2/nR,V 2 =V 1 !0:4.

3.119:58 103 s ( 2 hr 40 min)

4.4 ÅSD0:054J K^1

4.5 ÅSR D 549 J K^1 for both processes;

∂q=TextD 333 J K^1 and 0.

5.4 (a)SDnRln



cT3=2



V

n

b



C



5

2



nR

5.5 (a)qD 0 ,wD 1:50 104 J,

ÅU D 1:50 104 J,

ÅHD2:00 104 J

(c)ÅSD66:7J K^1

6.1 Sm151:6J K^1 mol^1

7.6 (a) D8:519 10 ^4 K^1

tD4:671 10 ^5 bar^1

.@p=@T /VD18:24bar K^1

.@U=@V /TD 5437 bar

(b)Åp1:8bar

7.7(b).@Cp;m=@p/T

D4:210 10 ^8 J K^1 Pa^1 mol^1

7.8(b) 8  10 ^4 K^1

7.115:001 103 J

7.12 ÅHD2:27 104 J,ÅSD43:6J K^1

7.13 (a)Cp;mD42:3J K^1 mol^1

(b)Cp;m52:0J K^1 mol^1

7.14 (a)2:56J K^1 g^1

7.15 (b)fD17:4bar

7.16 (a)D0:739,fD 148 bar

(b)BD7:28 10 ^5 m^3 mol^1

8.2 (a)Sm(l)D253:6J K^1 mol^1

(b)ÅvapSD88:6J K^1 mol^1 ,

ÅvapHD2:748 104 J mol^1

8.44:5 10 ^3 bar

8.5 19 J mol^1

8.6 (a)352:82K

(b)3:4154 104 J mol^1

8.7 (a)3:62 103 Pa K^1

(b)3:56 103 Pa K^1

(c)99:60C

8.8(b)ÅvapHD4:084 104 J mol^1

8.90:93mol

9.2(b)VA.xBD0:5/125:13cm^3 mol^1

VB.xBD0:5/158:01cm^3 mol^1

VB^1 157:15cm^3 mol^1

9.4real gas:pD1:9743bar

ideal gas:pD1:9832bar

507