The Colligative Properties Video Lessons

Concept:

# Problem: The vapor pressure of carbon tetrachloride, CCl4, is 0.354 atm and the vapor pressure of chloroform, CHCl3, is 0.526 atm at 316 K. A solution is prepared from equal masses of these two compounds at this temperature.Calculate the mole fraction of the chloroform in the vapor above the solution.

###### FREE Expert Solution

We have to calculate the mole fraction of chloroform in the vapor above solution.

The mole fraction of a component in the vapors above the solution is calculated using this formula:

Where,

Xa = mole fraction of a component in vapors above solution

Pa = vapor pressure of a component of solution

Pt = total vapor pressure

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###### Problem Details

The vapor pressure of carbon tetrachloride, CCl4, is 0.354 atm and the vapor pressure of chloroform, CHCl3, is 0.526 atm at 316 K. A solution is prepared from equal masses of these two compounds at this temperature.

Calculate the mole fraction of the chloroform in the vapor above the solution.