Question

when quick lime is dissolved in water, it starts boiling. Explain, why does it happen ?

Answer 1

Because it's a exothermic reaction in which heat energy is evolved. Simply, when water is added to quicklime ( calcium oxide), a lot of heat energy is produced - That's why it starts boiling.

CaO + H2O. -----> Ca(OH)2 + heat

Answer 2

Reason:-

Because it's a exothermic reaction in which heat energy is evolved. Simply, when water is added to quicklime ( calcium oxide), a lot of heat energy is produced - That's why it starts boiling.

Equation:-

CaO+H2O---->Ca(OH)2+heat