A Solution of Carbon Tetrachloride in Benzene, C₆H₆, at 20°C

Multiple Choice

A solution of carbon tetrachloride in benzene, C₆H₆, at 20°C has a total vapor pressure of 78.50 mmHg. (Assume that this solution is ideal.) The vapor pressure of pure benzene at this temperature is 74.61 mmHg and its density is 0.87865 g/cm³; the vapor pressure of pure carbon tetrachloride is 91.32 mmHg and its density is 1.5940 g/cm³. What percentage of the volume of this solution is due to carbon tetrachloride? (Hint: assume that you have 1.000 L of solution.)

A) 75.2%
B) 76.7%
C) 14.3%
D) 24.8%
E) 23.3%