Question

Wali
(2) Here calcium oxide and water react to form​

Answer 1

Answer:

CaO(s) + H2O (l) → Ca(OH)2(s) This reaction occurs when water is added to dry portland cement to make concrete, and heat evolution of energy as heat is evident because the mixture becomes warm.

Answer 2

$\texttt{Calcium Oxide reacts with water to}$

$\texttt{form Calcium Hydroxide. This reaction}$

$\texttt{gives out a large amount of heat.}$

$\mathtt{CaO + H_{2}O \longrightarrow Ca(OH)_{2}}$