Quantitative Chemical Analysis
Quantitative Chemical Analysis
9th Edition
ISBN: 9781464135385
Author: Daniel C. Harris
Publisher: W. H. Freeman
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Chapter 23, Problem 23.5P
Interpretation Introduction

Interpretation:

The extraction of a metal ion into an organic solvent with 8-hydroxyquinoline more complete at higher pH value reason for this observation has to be given.

Concept introduction:

Partition coefficient:

Partition of a solute is depends on “like dissolves like” concept.  This means the solubility of solute is more in a solvent whose polarity is similar to that of the solute.

The partition coefficient of solute (S) is given by

Solute(inphase1)Solute(inphase2)

K=AS2AS1[S]2[S]1where,K-partitioncoefficientAS1-Activityofsoluteinphase1AS2-Activityofsoluteinphase2[S]1-Concentrationofsoluteinphase1[S]2-Concentrationofsoluteinphase2

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