b.) and c.)?

Q6. Answer this question using pressure-composition diagram for methanol(1) + ethanol(2) at 20C: 0 80 70 p/Tom 60 50 40 0.0 0.1 02 0.3 014 03 0.6 16 0.7 0.8 0.9 1.0 *, 2 a) Is methanol more volatile than ethanol? Justify your answer. b) A liquid methanol(1) + ethanol(2) solution of composition x -0.220 is prepared at 20C and atmospheric pressure (760 Torr). If the pressure is slowly reduced, give: i) the pressure pa at which the first vapor forms ii) the composition of the first vapor iii) the pressure pare at which the last liquid remains iv) the composition of the last liquid. c) 200.0 moles of methanol and 300.0 moles of ethanol are in a tank at 20 C and 57.0 Torr. 1) Show both liquid and vapor phases are present in the tank. ii) Give the composition xr of the liquid and the composition 1 of the vapor in Use the lever rule to calculate the number of moles of liquid (w) and vapor (ru). d) Pure liquid methanol is added to pure liquid ethanol at 20-Cando constant 80D Torr pressure. Give the mote fraction of methanol in the liquid solution when the first vapor forms. Also give the mole fraction of methanol in the first apar (1). 19)