Three extractions with 50 ml portions of chloroform removed 97% of a solute from 200 ml of an aqueous solution. Calculate the partition coefficient of the solute: KD=Cchioro/Caq- Two weak bases (organic amities) have basic dissociation constants of KbA= 1 x 10-4 and KbB = 1 x 108. Both bases have partition coefficients of approximately 10 between chloroform and water. Describe a procedure, making use of the difference in kb, for separating the two by extraction. Two weak acids, HX and HY, have partition coefficients, KD = Cet/Caq, of 5 and 50 respectively, and dissociation constants of 1 x 104 and 1 x 10-8, respectively. Calculate the distribution ratios of the two acids at integral values of pH of the aqueous solution from pH 4 to pH 11, assuming equal volumes of the two solvents. What is the minimum pH for which the ratio of D values is at least 105?

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...
icon
Related questions
Question
100%
Three extractions with 50 ml portions of chloroform removed 97% of a solute from 200
ml of an aqueous solution. Calculate the partition coefficient of the solute:
KD =Cchloro/Caq-
Two weak bases (organic amities) have basic dissociation constants of KbA= 1 x 104
and KbB =1 x 10-8. Both bases have partition coefficients of approximately 10 between
chloroform and water. Describe a procedure, making use of the difference in K, for
separating the two by extraction.
Two weak acids, HX and HY, have partition coefficients, Kp = Cet/Caq, of 5 and 50
respectively, and dissociation constants of 1 x 104 and 1 x 108, respectively. Calculate
the distribution ratios of the two acids at integral values of pH of the aqueous solution
from pH 4 to pH 11, assuming equal volumes of the two solvents. What is the minimum
pH for which the ratio of D values is at least 105?
Transcribed Image Text:Three extractions with 50 ml portions of chloroform removed 97% of a solute from 200 ml of an aqueous solution. Calculate the partition coefficient of the solute: KD =Cchloro/Caq- Two weak bases (organic amities) have basic dissociation constants of KbA= 1 x 104 and KbB =1 x 10-8. Both bases have partition coefficients of approximately 10 between chloroform and water. Describe a procedure, making use of the difference in K, for separating the two by extraction. Two weak acids, HX and HY, have partition coefficients, Kp = Cet/Caq, of 5 and 50 respectively, and dissociation constants of 1 x 104 and 1 x 108, respectively. Calculate the distribution ratios of the two acids at integral values of pH of the aqueous solution from pH 4 to pH 11, assuming equal volumes of the two solvents. What is the minimum pH for which the ratio of D values is at least 105?
Expert Solution
steps

Step by step

Solved in 3 steps with 1 images

Blurred answer
Knowledge Booster
Analytical Separations
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY