Question

In an experiment, Quick lime ($CaO$) is added to water in a beaker. (a) Identify the type of reaction taking place and mention why does the beaker become hot. (b) Write the balanced chemical equation.

Accepted Answer

0. (a) It is a **combination reaction** (and **exothermic reaction**). The beaker becomes hot because a large amount of heat energy is released during the reaction. (b) Balanced chemical equation: $$CaO(s) + H_2O(l) ightarrow Ca(OH)_2(aq) + 	ext{Heat}$$

Slaking of Lime Reaction

Explanation

Practise this under board exam conditions