After reading this article you will learn about:- 1. Definition of Ion-Exchange 2. Site for Ion Exchange 3. Kinds of Exchangeable Ions 4. Factors Affecting Ion-Exchange. Definition of Ion-Exchange: Ion-exchange is defined as a reversible process by which cations and anions are exchanged between solid and liquid phases, and between solid phases it in close contact with each other. For [...]
After reading this article you will learn about:- 1. Concept of Silicate Clays 2. Structure of Silicate Clays 3. Classification 4. Sources of Negative Charges. Concept of Silicate Clays: (i) Size and Chemical Composition: The chemical analysis of clay indicates the presence of silica, alumina, iron and combined water. These make up from 90-98 per cent of the colloidal clay. [...]
This article throws light upon the three groups of ion-exchange equations. The groups are: 1. Empirical Formula 2. Kinetic or Statistical Formula 3. Mass Action. 1. Empirical Formula: The Freundlich equation is one of the first used in soil studies and it states that, m = ACB where, m = amount adsorbed per unit weight of soil; C = ion [...]