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Decomposition Reaction Definition

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In a decomposition reaction, one reactant yields two or more products.

In a decomposition reaction, one reactant yields two or more products.

Adrianna Williams, Getty Images

Decomposition Reaction Definition: A decomposition reaction is a type of chemical reaction where one reactant yields two or more products.

The general form for a decomposition reaction is

AB → A + B

Examples: Water can be separated by electrolysis into hydrogen gas and oxygen gas through the decomposition reaction

2 H2O → 2 H2 + O2

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