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Definition of Double displacement (double displacement reaction; double exchange; exchange; metathesis)

Double displacement (double displacement reaction; double exchange; exchange; metathesis) Definition from Science & Technology Dictionaries & Glossaries
General Chemistry Glossary
A double displacement or metathesis is a reaction in which two reactants trade fragments: AB + CD = AC + BD Most commonly, the fragments are ions, e. g. AgNO3(aq) + NaCl(aq) = AgCl(s) + NaNO3(aq)