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प्रश्न
Give the chemical reaction when a few pieces of slaked lime are added to a beaker half-filled with water. Will it be an endothermic or exothermic reaction?
टीपा लिहा
उत्तर
Calcium hydroxide [Ca(OH)2] is formed by the combination of calcium oxide and water with the generation of a large amount of heat.
\[\ce{\underset{Calcium oxide}{CaO} + \underset{Water}{H2O} -> \underset{Calcium hydroxide}{Ca(OH)2} + Heat}\]
Since large amount of heat is evolved it is an exothermic reaction.
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