化工热力学(第三版)陈钟秀课后习题答案(3)

此文档为教材配套的课后习题答案

B11

RTc108.314 132.91 6

B B 0.02989 0.049 0.1336 7.378 10 111 6

Pc13.496 10

B2 0.083

0.4220.422

0.083 0.3417 1.61.6

Tr2 304.2 0.1720.172

0.139 0.03588 4.2

Tr4.2 304.2 2

1

B2 0.139

B22

又Tcij

RTc208.314 304.21

B2 2B2 0.3417 0.225 0.03588 119.93 10 6 6 Pc27.376 10 TciTcj

0.5

132.9 304.2

3

0.5

201.068K

3

Vc1 Vc2 93.13 94.01

Vcij 93.55cm3/mol 22 Zc1 Zc20.295 0.274

0.2845

22 20.295 0.225 cij 1 0.137

22Zcij

Pcij ZcijRTcij/Vcij 0.2845 8.314 201.068/ 93.55 10 6 5.0838MPa

∴

Trij TTcij 201.068 1.507 Prij Pci 38j0.1035.08

0.4220.422

0.083 0.136 1.61.6

Tr121.5070.1720.172

0.139 0.1083 4.2

Tr4.21.50712

01990.

B12 0.083

1B12 0.139

∴B12

RTc1208.314 201.0681 6

B12 12B12 0.136 0.137 0.1083 39.84 10 6

Pc125.0838 10

22

Bm y1B11 2y1y2B12 y2B22

0.242 7.378 10 6 2 0.24 0.76 39.84 10 6 0.762 119.93 10 6 84.27 10 6cm3/mol∴Zm

1

BmPPV

RTRT

→V=0.02486m3/mol

∴V总=n V=100×103×81.38%/12×0.02486=168.58m3 (2)

P1 y1P

Zc10.295 0.24 0.1013 0.025MPa Zm0.2845

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