(a) The vapour pressure of water at 90C is 70.1 kPa and the mean latent heat of vaporization between 90 and 98C may be taken as 2270 kJ/kg. Calculate the vapour pressure of water at 98C using Clausius-Clapeyron equation. (b) A liquid solution containing 50% benzene and 50% toluene by weight is in contact with its vapours at 100C. Calculate the system pressure. Vapour pressure of benzene and toluene at 100C are 1.76 bar and 0.73 bar respectively