Using the following information determine the boiling point of a mixture contains $1560$ gm benzene and $1125\; gm$ chlorobenzene, when the external pressure is $1000\; torr$ Assume the solution is ideal.Given : Molar mass of benzene =$78$ ; Molar mass of chlorobenzene = $112.5$

Question

$\begin{array}{1 1} 120^{\circ}C \\ 110^{\circ}C \\ 100^{\circ}C \\ 90^{\circ}C \end{array}$