Elevation in boiling point of an aqueous solution of a non-electrolyte solute is ${2.01}^o$. What is the depression in freezing point of this solution? 

$\begin{array}{l}{\mathrm{K}}_{\mathrm{b}}\left({\mathrm{H}}_2\mathrm{O}\right)=0{.52}^{\mathrm{o}} {\mathrm{mol}}^{-1} \mathrm{kg}\\ {\mathrm{K}}_{\mathrm{f}}\left({\mathrm{H}}_2\mathrm{O}\right)=1{.86}^{\mathrm{o}} {\mathrm{mol}}^{-1} \mathrm{kg}\end{array}$