Plot Vapor Liquid Equilibrium For Component

Question

The equilibrium concentration of component A of in the vapour phase yA, with concentration of component A in liquid phase, XA, can be given by:

yA = xAPAo/P

and

xA = (P - PBo)/ (PAo – PBo)

where P = system pressure

PA°, P B° = saturated pressure of component (A) and (B) respectively.

(a) Briefly indicate the laws used to obtain these relationships.

(b) Plot the Vapour Liquid Equilibrium (VLE) curve (xA, yA) using the data given in Table Q5 and assuming that the benzene - toluene system will be maintained under an absolute pressure of 760 mmHg.

TABLE Q5

Temperature/°C

Vapour Pressure/ mmHg

 

PAo (benzene)

PBo(toluene)

82.2

845

310

84.1

880

330

90.6

1080

410

97.3

1330

505

104.4

1640

620

 

Summary

The question belongs to Chemical Engineering and it discusses about plotting Vapor Liquid Equilibrium for a component in liquid phase and vapor phase.

Total Word Count 81

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