A Solution Is 40 $\circ$ C the Vapor Pressure of Pure Benzene and Pure Carbon

Multiple Choice

A solution is 40.0% by mass benzene (C₆H₆) in carbon tetrachloride (CCl₄) at 20 ^$\circ$ C. The vapor pressure of pure benzene and pure carbon tetrachloride at this temperature is 74.61 mmHg and 91.32 mmHg, respectively. Calculate the vapor pressure of the solution at 20 ^$\circ$ C:

A) 66.4 mmHg
B) 73.8 mmHg
C) 81.8 mmHg
D) 83.0 mmHg
E) 84.6 mmHg