69. Solving a chemistry problem

2.2. Using the diagrams "boiling point - composition" at a pressure of P \u003d 1.01325 * 105 Pa, determine:
1 number of phases and composition of phases in systems of compositions X1 and X2 at temperatures t1, t2, t3, t4 (see Table 2.3.3).
2.number of degrees of freedom in systems of compositions X1 and X2 at temperatures t1, t2, t3, t4
3 At what temperature will a liquid of composition X1 boil and what will be the composition of the vapor in equilibrium with the boiling liquid?
4 How will the composition of the liquid and gaseous phases change as the temperature of the initial liquid increases?
5 the ratio between the amount of the liquid phase and the gaseous phase and what is the number of moles of substances in the phases at a temperature t in the system of composition X1 if the initial mass of the mixture is 10 kg?
6 what substances and in what quantity can be obtained by distillation of 10 kg of liquid of composition X1?
7 What will be the composition of the first drops of liquid when the vapor of composition X1 condenses?
8 partial pressures of the components in a mixture of composition X1 at the boiling point, if the solution is considered ideal.
9 Does the composition system X1 obey Raoult´s law at the boiling point and explain the reasons for the deviation from the ideal solution?

Table 2.3.3
No. System (Components A and B) Tboil, °C Compositions X1 and X2 (by B) Temperature, °C T1 T2 T3 T4
15 A H2O B NH3 100 -33.4 0.2 0.8 40 -20 60 0 80 30 100 70