A solution contains 72.0 g of #HCl# and 468 g of #C_6H_6#. What is the mole fraction of benzene?
The mole fraction of benzene is 0.752.
The mole fraction of a substance in a solution is equal to the moles of the substance divided by the total moles of all substances in the solution.
The mass of each compound needs to be converted to moles by dividing the mass by its molar mass.
First determine the molar mass of both compounds.
Molar Mass HCl:
Next determine the moles present for each compound by dividing the mass given in the question by its molar mass.
Determine the Mole Fraction of Benzene