Please solve this qustion.... Question 2 of 20 At 60 ° C, vapour pressure of methanol and water are 84.562 kPa and 19.953 kPa respectively. An aqueous solution of methanol at 60 ° C exerts a pressure of 39.223 kPa ; the liquid phase and vapour phase mole fractions of methanol are 0.1686 and 0.5714 respectively. Activity co-efficient of methanol is 1. 4.238 2. 1.9398 3. 1 .572 4. 3.389 Share with your friends Share 0 Vartika Jain answered this Dear Student, pCH3OH = yCH3OH Ptotaland, Ptotal =39.223 kPaSo, pCH3OH = 0.5714×39.223=22.41 kPaActivity of any component can be calculated as, aCH3OH = pCH3OHp°CH3OHor, aCH3OH=22.4184.562=0.265Now, Acitivity coefficient can be calculated as, γCH3OH =aCH3OHχCH3OH =0.2650.1686 =1.51Hence, correct answer is (3) 2 View Full Answer Yadav Ji answered this i think so 4 1
