A mixture of immiscible liquids (both water-insoluble) is ...

[maegan_martin]

A mixture of immiscible liquids (both water-insoluble) is subjected to steam distillation. At
  90, the vapor pressure of pure water is 526 mm Hg. If the vapor pressure of compound A is
  127 mm Hg and that of B is 246 mm Hg at 90:
  (a) what is the total vapor pressure of the mixture at 90?
  (b) would this mixture boil at a temperature above or below 90?
  (c) what would be the effect on the vapor pressure and boiling temperature by doubling the
  amount of water used?

Question 2

Explain how you would purify octyl acetate from a mixture of octyl acetate and methylene
  chloride. (You will first need to look up the boiling point of octyl acetate in a suitable hand
  book, Internet site, or online source. See Technique 17, p. 198.)

[Zack0mack0101@yahoo.com]

Answer to Question 1

(a) 899 mm Hg
(b) below 90
(c) no effect

Answer to Question 2

Methylene chloride boils at 40C and octyl acetate at 211 (Aldrich Catalogue, 2000-2001 edi
tion). First distill the methylene chloride using simple distillation. Then prepare for vacuum
distillation: cool the distillation flask, add boiling chips for vacuum distillaion, and add a
round-bottom flask to the vacuum adaptor. Connect the apparatus to a vacuum source and
distill the octyl acetate by vacuum distillation.

[maegan_martin]

Thanks

[Zack0mack0101@yahoo.com]

Welcome