Deviations from Raoult’s law lead to the formation of azeotropes, constant boiling mixtures that cannot be separated by distillation, making industrial separations difficult. For components A and B, there is a positive deviation if the A-B attraction is less than A-A and B-B attractions (A and B reject each other), and a negative deviation if the A-B attraction is greater than A-A and B-B attractions. If the A-B attraction is nearly equal to the A-A and B-B attractions, the solution obeys Raoult’s law. Explain whether the behavior of each pair will be nearly ideal, have a positive deviation, or a negative deviation: (a) Benzene (C6H6) and methanol(b) Water and ethyl acetate (c) Hexane and heptane(d) Methanol and water(e) Water and hydrochloric acid
Deviations from Raoult’s law lead to the formation of azeotropes, constant boiling mixtures that cannot be separated by distillation, making industrial separations difficult. For components A and B, there is a positive deviation if the A-B attraction is less than A-A and B-B attractions (A and B reject each other), and a negative deviation if the A-B attraction is greater than A-A and B-B attractions. If the A-B attraction is nearly equal to the A-A and B-B attractions, the solution obeys Raoult’s law. Explain whether the behavior of each pair will be nearly ideal, have a positive deviation, or a negative deviation: (a) Benzene (C6H6) and methanol(b) Water and ethyl acetate (c) Hexane and heptane(d) Methanol and water(e) Water and hydrochloric acid
General, Organic, and Biological Chemistry
7th Edition
ISBN:9781285853918
Author:H. Stephen Stoker
Publisher:H. Stephen Stoker
Chapter8: Solutions
Section: Chapter Questions
Problem 8.114EP: Consider two solutions, A and B, separated by an osmotic semipermeable membrane that allows only...
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Deviations from Raoult’s law lead to the formation of
azeotropes, constant boiling mixtures that cannot be separated by
distillation, making industrial separations difficult. For components A and B, there is a positive deviation if the A-B attraction
is less than A-A and B-B attractions (A and B reject each other),
and a negative deviation if the A-B attraction is greater than A-A
and B-B attractions. If the A-B attraction is nearly equal to the
A-A and B-B attractions, the solution obeys Raoult’s law. Explain
whether the behavior of each pair will be nearly ideal, have a positive deviation, or a negative deviation:
(a) Benzene (C6H6) and methanol
(b) Water and ethyl acetate
(c) Hexane and heptane
(d) Methanol and water
(e) Water and hydrochloric acid
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