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Answer: The formation of calcium hydroxide CaOH2 from calcium oxide (CaO) and water (H2O) is an exothermic combination reaction.
Combination reaction:
A combination reaction is one in which two or more reactants combine to generate a single product.
General form of combination reaction is: X + Y → XY
A synthesis reaction is another name for a combination reaction. Calcium hydroxide is formed when calcium oxide (commonly known as quick lime) mixes with water (commonly known as slaked lime).
