(a) write the chemical reaction involved in the process of formation of slaked lime. (b) list and define the two categories of reaction in which this reaction can be classified
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a) The formation of slaked lime (calcium hydroxide, Ca(OH)2) when water is added to lime (CaO) is exothermic. CaO(s) + H2O (l) → Ca(OH)2(s) This reaction occurs when water is added to dry portland cement to make concrete, and heat evolution of energy as heat is evident because the mixture becomes warm.
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