Decomposition Reaction | Chemistry | Britannica

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major reference

• In chemical reaction: Decomposition reactions

  Decomposition reactions are processes in which chemical species break up into simpler parts. Usually, decomposition reactions require energy input. For example, a common method of producing oxygen gas in the laboratory is the decomposition of potassium chlorate (KClO3) by heat

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carbene formation

• In carbene: Formation.

  The photolytic decomposition of certain ketenes, substances the molecules of which contain two carbon atoms and an oxygen atom joined by double bonds,

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photosensitization

• In photosensitization

  …excited ethylene molecules subsequently undergo decomposition. Another mode of photosensitization observed in many reactions involves direct participation of the sensitizer in the reaction itself.

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