55. Solution to Chemistry Problem

55. Solution to Chemistry Problem

9. The dependence of the liquid phase composition and the vapor in equilibrium with it on the temperature is given for a two-component liquid system A-B at constant pressure. The molar composition of the liquid phase x and saturated vapor y is expressed as a percentage of substance A. Based on the data in Tables 2 and 3, complete the following tasks:
1. plot a graph of the dependence of the vapor composition on the liquid phase composition at constant pressure;
2. plot a boiling diagram for the A-B system;
3. determine the boiling point of the system with a molar fraction of a% of substance A;
4. determine the composition of the vapor in equilibrium with the liquid phase boiling at temperature T1;
5. what component and in what quantity can be isolated from a system consisting of b kg of substance A and c kg of substance B.
Table 2

9 A-CH3OH
B-CCL4
at P*10-4 Pa=10.133
Molar composition:
x 0. 0.2 0.4 1.3 1.7 3.0 5.1 10.7 12.4 24.8 40.145.3 55.0 56.6 72.5 76.4 81.3 83.8 88.3 91.8 94.8 97.9 99.3 100.0
y –0 0 2.0 12.0 24.2 26.4 38.3 44.5 49.5 50.0 52.2 52.2 53.7 54.1 55.2 55.2 59.1 60.3 63.0 64.9 69.6 75.3 82.3 91.0 96.7 100.0

T, K 349.7 349.1 345.4 340.6 339.9 335.0 332.4 330.2 330.2 330.0 329.3 328.8 328.8 327.7 328.7 329.0 329.4 329.8 330.1 331.2 332.5 333.9 335.8 337.1 337.7

T1, K a, % b, kg c, kg

333 25 27.1 72.9

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