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The vapor pressure of pure acetone (C3H6O) is 216 torr

The vapor pressure of pure chloroform (CHCl3) is 157 torr.

What is the mole fraction of acetone (C3H6O) in the vapor phase resulting from a solution of 0.100 mol acetone and 0.200 mol chloroform (CHCl3) in the liquid phase?

Respuesta :

The mole fraction of acetone (C₃H₆O) is 0.333

Data obtained from the question

  • Mole of C₃H₆O = 0.1 mole
  • Mole of CHCl₃ = 0.2 mole
  • Mole fraction of C₃H₆O =?

How to determine the mole fraction

Mole fraction of a substance can be obtained by using the following formula:

Mole fraction = mole / total mole

With the above formula, we can obtain the mole fraction of C₃H₆O as follow:

  • Mole of C₃H₆O = 0.1 mole
  • Mole of CHCl₃ = 0.2 mole
  • Total mole = 0.1 + 0.2 = 0.3 mole
  • Mole fraction of C₃H₆O =?

Mole fraction = mole / total mole

Mole fraction of C₃H₆O = 0.1 / 0.3

Mole fraction of C₃H₆O = 0.333

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