A 60 kmol/h liquid solution which is at 25 ^oC, contains 32 mol percent ethylene glycol and 68 mol percent water. This solution will be flash- distilled at 1.013 bar constant pressure. For a fractional vaporization of 0.50, calculate:

a) The compositions of top and bottom products,

b) The flash temperature,

c) The percentage recovery of ethylene glycol.

(Hint: Draw t-xy and x-y diagrams of the water- ethylene glycol system using the data table below. x refers to mole fraction of water in liquid and y refers to mole fraction of water in vapor.)

T(oC)	197.1	178.9	165.8	148.1	136.2	127.4	120.5	115.0	110.3	106.3	103.0	100
x	0.0	0.05	0.1	0.2	0.3	0.4	0.5	0.6	0.7	0.8	0.9	1.0
y	0.0	0.464	0.675	0.852	0.921	0.954	0.973	0.983	0.990	0.995	0.998	1.0