8% KCl solution fed to a single stage evaporator at 30C is concentrated to 27%. Since the operating temperature of the evaporator is 110 C and the heat capacity of the feed solution is 0.87 kcal/kg "C, in order to concentrate 5 tons of dilute solution per hour; Calculate the mass of water removed from the solution per hour in kg, b- Calculate the heat required for concentration in kcal/h. The latent heat of evaporation of water at this temperature can be taken as A=532 kcal/kg.) a-