Question

+ AWN t Vacuum Distillation Question 2 °C 400- 700 600 ***** 300- 500 ल 400 200- 300 200 100- 100- Pressure in torr B.P. corrected to 760 torr Observed B.P. A vacuum distillation is being carried out on a mixture of two miscible liquids. Under the reduced pressure used in the separation, liquid A boils at 100°C. If liquid A has a normal boiling point of 200 degrees centigrade and liquid B has a normal boiling point of 300°C, what is the boiling point of liquid B under the pressure used in the separation? Annotate the nomograph above showing how you found your answer. Boiling point of compound B under reduced pressure =

Answer 1

+ 01 °C 400 °c 700 600- 300 1 500 2 400- 200 3004 185°C 200 100-4 100 Pressure in torr B.P. corrected to 760 torr Observed B.P. 7 connecting Boiling point of A at reduced pressure (100%) and normal boiling point (200°C) of A we get the vackrum on the right side of Pressure curveson point 6. So connecting point ® and 300C on the neiddle lino ( 8-P. corrected to 760 tors) line , we get point ® at 185°C. the boiling point of liquid & undere this pressure 185°C. So Aus