When quicklime (calcium oxide, CaO) is added to water, it undergoes a reaction known as slaking:
CaO+ H2O→ Ca(OH)2
Explanation:
- Formation of Calcium Hydroxide: Quicklime reacts with water to form calcium hydroxide (Ca(OH)2), also known as slaked lime or hydrated lime.
- Heat Release: The reaction is exothermic, meaning it releases heat. This can cause the water to become warm.
- Appearance: Calcium hydroxide is a white, milky solution known as limewater.
In summary, quicklime reacts with water to form slaked lime and releases heat in the process.
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