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Types of Chemical Reactions - Combination Reaction

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  • Combination Reaction
  • Experiment: Formation of slaked lime by the reaction of calcium oxide with water



A Combination reaction is a reaction where two or more elements or compounds (reactants) combine to form a single compound (product). Such reactions may be represented by equations of the following form:

X + Y → XY   

The combination of two or more elements and form one compound is called combination reaction.

Calcium oxide reacts vigorously with water to produce slaked lime (calcium hydroxide) releasing a large amount of heat.

CaO(s) + H2O(l) → Ca(OH)2(aq) + Heat

In this reaction, calcium oxide and water combine to form a single product, calcium hydroxide. Such a reaction in which a single product is formed from two or more reactants is known as a combination reaction

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