6-) A 30%NaOH solution at 66C at a flow rate of 5000kg/hr is desired to be concentrated to 50% in an evaporator. The pressure of the direct steam used for heating is 215kPa and the steam operating pressure of the evaporator is 25kPa. Calculate BPR, hF, hV, hL and ^^ for the given system. (Cp-1.884 KJ/kg.K, Geankoplis 3rd Edition, use the steam table from the textbook.) a) 35C,257kJ/kg,2750kJ/kg,567kJ/kg,2250kJ/kg b) 43C,257kJ/kg,2699kJ/kg,567kJ/kg,2196kJ/kg c) 43C,257kJ/kg,2750kJ/kg,567kJ/kg,2250kJ/kg d) 43C,300kJ/kg,2699kJ/kg,500kJ/kg,2196kJ/kg