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Carbon, Catenation and Tetravalency

Benzene and t...

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Benzene and toluene form nearly ideal solutions. At T = 300 K, the vapor pressures of the pure liquids are, 103 and 32 torr. a) A liquid mxiture is composed of 3 mol toluene and 2 mol benzene. If the pressure over the mixture at 300k is gradually reduced, at what pressure does the first vapor form? b) What is the compostion of the first trace of vapor formed? c) If the pressure is reduced further, what is the composition of the last trace of liquid? d) At what Pressure does the last trace of liquid disappear? e) What will be the pressure, the composition of the liquid, and the composition of the vapor when one mole of the mixture has been vaporized?

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Q. Two compounds A and B in when mixed form nearly ideal solutions. At room temperature,

P_{A}^{0} = 40 m m H g

P_{B}^{0} = 120 m m H g

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A liquid mixture of benzene (

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P_{T}^{o} = 4.274 k N m^{- 2}

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P_{A}^{0} = 40 m m H g

P_{B}^{0} = 120 m m H g

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1 m o l

3 m o l

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x_{B} = Composition of B in liquid phase when the last trace of liquid disappears

Q. Two compounds A and B in when mixed form nearly ideal solutions. At room temperature,

P_{A}^{0} = 40 m m H g

P_{B}^{0} = 120 m m H g

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A liquid mixture is composed of

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of B.
If the pressure over the mixture at room temperature is reduced. At what pressure does the first vapour form?

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