Vapour pressure of chloroform (CHCl₃) and  dichloromethane (CH₂Cl₂) at 25°C are 200 mm Hg

and 41.5 mm Hg respectively. Vapour pressure of the solution obtained by mixing

25.5 g of CHCl3 and 40 g of CH2C12 at the same temperature will be

(Molecular mass of CHCl3 = 119.5 u and molecular mass of CH2C12 = 85 u)

(1) 173.9 mm Hg (2) 615.0 mm Hg (3) 347.9 mm Hg (4) 285.5 mm Hg