화공열역학 12장 연습문제
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- 2012.09.10
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- 2011.10
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화공열역학 12장 연습문제입니다.
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본문내용
PROBLEM
12.6. VLE data for methyl tert-butyl ether(1)/dichloromethane(2) at 308.15 K (extracted form F. A. Matom C. Berro, and A. Peneloux, J. Chem. Eng. Data, vol. 36, pp. 259-262, 1991) are as follows:
P/kPa x1 y1 P/kPa x1 y1
85.265 0.0000 0.0000 59.651 0.5036 0.3686
83.402 0.0330 0.0141 56.833 0.5749 0.4564
82.202 0.579 0.0253 53.689 0.6736 0.5882
80.481 0.0924 0.416 51.620 0.7676 0.7176
76.719 0.1665 0.0804 50.455 0.8476 0.8238
72.422 0.2482 0.1314 49.926 0.9093 0.9002
68.005 0.3322 0.1975 49.720 0.9529 0.9502
65.096 0.3880 0.2457 49.624 1.0000 1.0000
The data are well correlated by the three-parameter Margules equation[an extension of Eq(12.9)]:
G^E/RT=(A_21 x_1+A_12 x_2-Cx_1 x_2)x_1 x_2
Implied by this equation are the expressions:
lnγ_1=x_2^2 [A_12+2(A_21-A_12-C) x_1+3C_1^2 ]
lnγ_2=x_1^2 [A_21+2(A_12-A_21-C) x_2+3C_2^2 ]
(a) Basing calculation on Eq. (12.1), find the values of parameters A_12, A_21, and C that provide the best fit of G^E/RT to data.
(b) Prepare a plot of lnγ_1, lnγ_2, and G^E/x_1 x_2 RT vs. x_1 showing both correlation and experimental values.
(c) Prepare a P-x-y diagram [see Fig. 12.7(a)] that compares the experimental data with the correlation determined in (a).
(d) Prepare a consistency-test diagram in Fig 12.8.
참고 자료
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