Equal moles of pure liquid 1-Butanol, Benzene, and Phenol form an ideal solution system at 353K. Determine Yi for each component at vapor-liquid equilibrium (VLE) ofthe mixtureat 353K.

Explanation:

Given that:

The temperature of the ideal solution formed by the compounds = 353K

= (353 - 273)° C

= 80° C

The data below shows the Antoine constant obtained for 1-Butanol, Benzene, and Phenol.

Compound               A                   B                C

1 - Butanol            15.3144          3212.43      182.739

Benzene              13.7819          2726.81      217.572

Phenol                 14.4397          3507.80     175.400

By the application of the Antoine constant, we can find the vapor pressure of each corresponding component at the given temperature of 80° C.

The Antoine equation is expressed as:

However, since the ideal solution has equimolar composition.

Then:

component (1) = 1 mole ,

component (2) = 1 mole,

component (3) = 1 mole,

The total mole = 1 + 1 + 1 = 3,

Thus, mole fraction = mole of component/total mole,

mole fraction of component (1) = 1/3,

mole fraction of component (2) = 1/3,

mole fraction of component (3) = 1/3,

i.e.

Using Raoult's law, The total pressure is computed as:

P = 41.7592 kPa

and;

Thus:

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