Answer
$444.0\ mmHg$
Work Step by Step
The number of moles of iodine: $105\ g\div 253.81\ g/mol=0.414\ mol$
The number of moles of CCl4: $325\ g\div 153.82\ g/mol=2.113\ mol$
Mole fraction of solvent: $2.113/(2.113+0.414)=0.836$
Vapor pressure of the mixture: $P=XP^0=0.836\times531\ mmHg=444.0\ mmHg$
