Chapter 16, Problem 114CP

Carbon tetrachloride (CCl₄) and benzene (C₆H₆) form ideal solutions. Consider an equimolar solution of CCl₄ and C₆H₆ at 25°C. The vapor above the solution is collected and condensed. Using the following data, determine the composition in mole fraction of the condensed vapor.

Substance	$\Delta G_{\text{f}}^{\text{o}}$
C6H6(l)	124.50 kJ/mol
C6H6(g)	129.66 kJ/mol
CCI4(l)	−65.21 kJ/mol
CCI4,(g)	−60.59 kJ/mol