What is the composition of the vapour which is in equilibrium at 30 degree celcius with a benzene-toluene solution with a mole fraction of benzene of 0.400? (P0 B is 119 torr and P0 T is 37 torr) (a) 1.237 (b) 2.237 (c) 3.237 (d) 0.237
Asked by Balbir
28th July 2019,
7:59 PM
Answered by Expert
Answer:
Q. What is the composition of the toluene vapour which is in equilibrium at 30 degree celcius with a benzene-toluene solution with a mole fraction of benzene of 0.400? (P0 B is 119 torr and P0 T is 37 torr)
Given:
T = 30 °C
PB0 = 119 torr
PT0 = 37 torr
PT = XT PT0
Mole fraction of benzene = 0.4
Mole fraction of ttoluene = 1 - 0.4
= 0.6
According to Raoult's law,
PB = XBP0
PT = XT PT0
Total pressue = PB + PT ---(1)
By putting values in eq (1)
PTot = XBPB0 + XT PT0
= (0.4 × 119) + (0.6×37)
= 69.8 torr
Mole fraction of toluene in vapour phase
Answered by Expert
28th July 2019,
11:57 PM
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