The mole fraction of in the vapour in equilibrium with liquid mixture of and is 0.3474

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Problem

The mole fraction of

\text{CCl}_4(\text{g})

in the vapour in equilibrium with liquid mixture of

\text{CCl}_4

and

\text{SiCl}_4

is 0.3474. The vapour pressure of

\text{SiCl}_4

and

\text{CCl}_4

is 238.3 and 114.9 mm respectively at the same temperature. Calculate % by mass of

\text{CCl}_4

in liquid mixture.