CaO + H2O → Ca (OH)2 is
(a) decomposition reaction
(b) combination reaction
(c) dissociation reaction
(d) endothermic reaction
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Answer:
combination reaction is the answer
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The given reaction is a (b) Combination reaction.
By definition, a combination reaction is one in which multiple reactants combine chemically to form a single product. In other words, the number of products has to be less than the number of reactants. In the given equation, calcium oxide (CaO) and water (H2O) combine through chemical reaction to form calcium hydroxide (Ca(OH)2). Since both the reactant combine, and only a single product is formed, we can classify this equation as a combination reaction.
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