Deviations from Raoult’s law lead to the formation of azeotropes, constant boiling mixtures that cannot be separated bydistillation, making industrial separations difficult. For compo-nents 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-Aand 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. Ex-plain whether the behavior of each pair will be nearly ideal, havea positive deviation, or a negative deviation: (a) benzene (C6H6)and methanol; (b) water and ethyl acetate; (c) hexane and hep-tane; (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 bydistillation, making industrial separations difficult. For compo-nents 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-Aand 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. Ex-plain whether the behavior of each pair will be nearly ideal, havea positive deviation, or a negative deviation: (a) benzene (C6H6)and methanol; (b) water and ethyl acetate; (c) hexane and hep-tane; (d) methanol and water; (e) water and hydrochloric acid.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Deviations from Raoult’s law lead to the formation of azeotropes, constant boiling mixtures that cannot be separated bydistillation, making industrial separations difficult. For compo-nents 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-Aand 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. Ex-plain whether the behavior of each pair will be nearly ideal, havea positive deviation, or a negative deviation: (a) benzene (C6H6)and methanol; (b) water and ethyl acetate; (c) hexane and hep-tane; (d) methanol and water; (e) water and hydrochloric acid.
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