Liquid Solution

What is the freezing point of 1 molal aqueous solution of a non volatile solute?

(\(\mathrm{K}_{\mathrm{f}}=1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1})\) (\(\mathrm{T}_{\mathrm{f}}^0\) for water \(=0^{\circ} \mathrm{C})\)