Ion-exchange reaction | Definition, Examples, Applications, & Facts
WEBIon-exchange reaction, any of a class of chemical reactions between two substances (each consisting of positively and negatively charged species called ions) that involves an exchange of one or more ionic components. Ions are atoms, or groups of atoms, that bear a positive or negative electric.
Ion-exchange reaction - Procedures, Chemistry, Equilibrium
WEBThere are two chief theories of ion-exchange processes related to the two principal ways in which the columns are employed. In the first procedure, displacement, the column originally contains mobile ions of one kind that are pushed down the column by the steady flow of a solution of ions of a second kind.
Ion-exchange reaction - Materials, Process, Applications
WEBIon-exchange reaction - Materials, Process, Applications: Soil is able to bind positive ions (like K+ and Ca2+) because it contains clay minerals and organic humic acids. Both of those substances are insoluble materials that carry, as a part of their molecular framework, negatively charged ionic groups.
Ion-exchange reaction - Applications, Chemistry, Processes
WEBIon-exchange reaction - Applications, Chemistry, Processes: Ion exchange is used for both analytical and preparative purposes in the laboratory, the analytical uses being the more common. An important use of ion-exchange chromatography is in the routine analysis of amino acid mixtures.
Ion-exchange reaction - Kinetics, Equilibrium, Processes
WEBIon-exchange reaction - Kinetics, Equilibrium, Processes: Generally, ion exchange is fast. No electron-pair bonds need be broken, and the rate of the process is limited only by the rate at which ions can diffuse in and out of the exchanger structure.
Water softening | Definition, Process, & Results | Britannica
WEBIon exchange is a common industrial method of water softening. It is accomplished by passing the water through columns of a natural or synthetic resin that trades sodium ions for calcium and magnesium ions.
Ion-exchange resin | Synthetic Polymer, Adsorption Properties
WEBIn industrial and domestic applications, ion-exchange resins are used for the removal of calcium, magnesium, iron, and manganese salts from water (water softening), for purification of sugar, and for concentration of valuable elements, such as gold, silver, and uranium from mineral ores.
Ion-exchange reaction - Industry, Medicine, Chemistry | Britannica
WEBIon exchange finds its major industrial application in the treatment of water. Hard water —caused by the presence of calcium and magnesium ions, which form insoluble precipitates with soaps—is softened by exchanging …
Rare-earth element - Processing Ores | Britannica
WEBAug 16, 2024 · In the ion-exchange process, a metal ion, R 3+, in solution exchanges with three protons on a solid ion exchanger—a natural zeolite or a synthetic resin—that is normally called the resin. The tenacity with which the cation is held by the resin depends upon the size of the ion and its charge.
Ion-exchange chromatography | chemistry | Britannica
WEBIon-exchange chromatography (IEC) is a subdivision of liquid-solid chromatography, but its importance is such that it deserves special mention. As the name implies, the process separates ions; the basis of the separation is the varying attraction of different ions in a solution to oppositely charged…. Read More.