5C.1(a) The following temperature-composition data were obtained for a mixture of octane (O) and methylbenzene (M) at 1.00 atm, where x is the mole fraction in the liquid and y the mole fraction in the vapour at equilibrium. e/ºc XM 110.9 112.0 114.0 115.8 117.3 119.0 121.1 123.0 0.908 0.795 0.615 0.527 0.408 0.923 0.836 0.698 0.624 0.527 0.410 0.300 0.203 0.097 0.297 0.164 YM The boiling points are 110.6°C and 125.6°C for M and O, respectively. Plot the temperature-composition diagram for the mixture. What is the composition of the vapour in equilibrium with the liquid of composition (i) XM=0.250 and (ii) xo = 0.250?

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5C.1(a) The following
temperature-composition
data were obtained for
a mixture of octane (O) and methylbenzene (M) at 1.00 atm, where x is
the mole fraction in the liquid and y the mole fraction in the vapour at
equilibrium.
e/ºc
XM
110.9 112.0 114.0 115.8 117.3 119.0 121.1 123.0
0.908 0.795 0.615 0.527 0.408
0.923 0.836 0.698 0.624 0.527 0.410
0.300 0.203 0.097
0.297
0.164
YM
The boiling points are 110.6°C and 125.6°C for M and O, respectively.
Plot the temperature-composition diagram for the mixture. What is the
composition of the vapour in equilibrium with the liquid of composition
(i) XM=0.250 and (ii) xo = 0.250?
Transcribed Image Text:5C.1(a) The following temperature-composition data were obtained for a mixture of octane (O) and methylbenzene (M) at 1.00 atm, where x is the mole fraction in the liquid and y the mole fraction in the vapour at equilibrium. e/ºc XM 110.9 112.0 114.0 115.8 117.3 119.0 121.1 123.0 0.908 0.795 0.615 0.527 0.408 0.923 0.836 0.698 0.624 0.527 0.410 0.300 0.203 0.097 0.297 0.164 YM The boiling points are 110.6°C and 125.6°C for M and O, respectively. Plot the temperature-composition diagram for the mixture. What is the composition of the vapour in equilibrium with the liquid of composition (i) XM=0.250 and (ii) xo = 0.250?
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