A sucrose solution in 50 g water boils at $100.15^{\circ}C$ , If this solution is heated till its temperature is $100.375^{\circ}C$, how much of water is evaporated ? Given :$ K_b(water)=0.52\;K\;kg\;mol^{-1}$

Question

$\begin{array}{1 1} 30\;g \\25\;g \\ 15\;g \\10\;g \end{array} $