double decomposition

American  

noun

Chemistry.

1. a reaction whose result is the interchange of two parts of two substances to form two new substances, as AgNO 3 + NaCl → AgCl + NaNO 3 .

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double decomposition British  

noun

1. Also called: metathesis.  a chemical reaction between two compounds that results in the interchange of one part of each to form two different compounds, as in AgNO 3 + KI → AgI + KNO 3

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Etymology

Origin of double decomposition

First recorded in 1865–70

Example Sentences

See Examples For:

double decomposition

When salt is added to a potassium soap double decomposition occurs, the potassium soap being transformed to a sodium soap and the potassium uniting with the chlorine to form potassium chloride.

From Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. by Thomssen, E. G.

This enters into double decomposition with the salt, as shown in the first equation under the Solvay process.

From An Elementary Study of Chemistry by McPherson, William

Further he prepared a large number of substances, including the chlorides and other salts of lead, tin, iron, zinc, copper, antimony and arsenic, and he even noted some of the phenomena of double decomposition.

From Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 1 "Gichtel, Johann" to "Glory" by Various

Between calcium carbide and water vapour a double decomposition occurs chemically identical with that between carbide and liquid water; but the physical effect of the reaction and its practical bearings are considerably modified.

From Acetylene, the Principles of Its Generation and Use A Practical Handbook on the Production, Purification, and Subsequent Treatment of Acetylene for the Development of Light, Heat, and Power by Leeds, F. H. (Frank Henley)

In the case of separation from solutions, either by crystallization or by precipitation by double decomposition, the temperature, the concentration of the solution, and the presence of other ions may modify the form obtained.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" by Various