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Endothermic and Exothermic Reaction

Quicklime rea...

Question

Quicklime reacts vigorously with water to for calcium hydroxide with a hissing sound. WHY IS THE HISSING SOUND PRODUCED?

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Solution

Dear Student,
Reaction of calcium oxide and water yields calcium hydroxide and energy.
CaO + H₂O $\to$ Ca(OH)₂+ energy
The reaction is exothermic in nature. That is why a hissing sound is produced due to the release of considerable amount of energy.

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