6. The dependence of the composition of the liquid phase 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 given data:
1) plot a graph of the dependence of the vapor composition on the liquid composition at constant pressure;
2) plot a boiling diagram for the system A - B;
3) determine the boiling point of the system with a molar content of a% of substance A; what is the composition of the first vapor bubble above this system; at what temperature will the boiling of the system stop; what is the composition of the last drop of the liquid phase?
4) determine the composition of the vapor in equilibrium with the liquid phase boiling at temperature T1;
5) by means of which experiment can one establish the composition of a liquid binary system if it begins to boil at temperature T1 in the presence of a boiling diagram for the system?
6) 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?
7) what component and in what quantity should be added to the mixture specified in p.6 to obtain an azeotropic system?
8) what quantity of substance A will be in the vapor and liquid phase if 2 kg of a mixture with a molar content of a% of substance A is heated to temperature T1?
9) determine the variability of the system at the azeotropic point.

Option 6
A-H2O
B-iso-C4H10O
at P=10.133*10-4 Pa
System P •10-4, Pa Molar composition A, % T, K
x – liquid phase y – vapor T, K x – liquid phase y – vapor
13.5 40.1 370.8 60.5 66.7 362.4
15.0 42.0 370.1 67.0 67.0 362.2
15.9 43.7 369.6 97.5 67.2 362.5
17.2 44.6 369.0 97.8 67.3 363.1
39.7 62.6 363.3 98.6 71.4 364.5
40.5 63.3 363.2 99.1 78.2 366.4
56.4 66.0 362.5 99.8 95.7 371.9
T1, K a, % b, kg c, kg
N option T1 a b c
6,365 35 68.8 31.2

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