Question

# Quicklime (CaO) reacts with water to form slaked lime Ca(OH)2. During this process:Heat is releasedHeat is absorbed and then releasedHeat is neither absorbed nor releasedHeat is absorbed

Solution

## The correct option is A Heat is releasedQuicklime (calcium oxide, CaO) on combining with water, gets converted to slaked lime (calcium hydroxide, Ca(OH)2) with the liberation of the enormous amount of heat. Hence, the reaction is exothermic in nature. The reaction involved is: CaO (s)+H2O (l)⟶Ca(OH)2(s)+Heat

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