Boiling point-composition diagram

The boiling point increases regularly. The boiling point - composition diagram for such a system is shown in Fig. 1, 4, 2 (the complementary vapour pressure - composition diagram is depicted in Fig. I, 4, 3 for purposes of comparison only). Let us consider the behaviour of such a liquid pair upon distillation. If a solution of composition is heated, the vapour pressure will rise until at the point ij it is equal to the pressure of the atmosphere, and boiling commences at temperature The com-... 

Maximum boiling point. A typical boiling point - composition diagram is shown in Fig. 1, 4,5. By reasoning analogous to that given... 

Figure 2 is a boiling point-composition diagram for the cyclohexane-toluene system. If amixture of 75 mole percent toluene and 25 mole percent cyclohexane is heated, we find from Fig. 2 that it boils at 100°C, or point A. Above a binary mixture of cyclohexane and toluene the vapor pressure has contributions from each component. Raoult s law states that the vapor pressure of the cyclohexane is equal to the product of the vapor pressure of pure cyclohexane and the mole fraction of cyclohexane in the liquid mixture ... 

Figure 2 shows that the condensations and redistillations in a bubble cap column consisting of three plates correspond to moving on the boiling point-composition diagram from point A to point E. 

Figure 26 represents the boiling-point-composition diagram of... 

Figure 3-9. Boiling point - composition diagram for a mixture of benzene and toluene at 760 torr pressure.

Construct an approximate boiling-point-composition diagram for a benzene-methanol system. The mixture shows azeotropic behavior (see Table 15.3). Include on the graph the boiling points of pure benzene and pure methanol and the boiling point of the azeotrope. Describe the behavior on distillation of a mixture that is initially rich in benzene (90%) and then for a mixture that is initially rich in methanol (90%). 

Miller, K. J. Boiling point - composition diagrams for die 2-ethoxyethanol - ethyl acetate and 2-ethox-yethanol - propyl acetate. Chem. Eng. Data Ser. 1958, 3, 239-240. 

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