Urea forms an ideal solution in water .Determine the vapour pressure of aqueous solution containing 10% by mass of urea of $40^{\large\circ}C$.(Vapour pressure of water,at $40^{\large\circ}C$=55.3 mm Hg)

Question

$\begin{array}{1 1}\text{53.52 mm Hg}\\\text{63.52 mm Hg}\\\text{73.52 mm Hg}\\\text{83.52 mm Hg}\end{array}$