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double decomposition

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 .


double decomposition

noun

  1. 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 Also calledmetathesis
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of double decomposition1

First recorded in 1865–70
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Example Sentences

Those of muriate or sulphate of soda change the potash into a soda soap, by double decomposition.

Under this process ammonium nitrate is produced by the double decomposition of ammonium sulphate and sodium nitrate.

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

The benzoates may, in general, be easily prepared by either neutralising the acid with the base, or by double decomposition.

The soluble chromates may all be made by direct solution of the base in the acid, or by double decomposition.

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double-declutchdouble demy