Question

CaO + __ ---------> Ca(OH)2

Answer 1

Answer:

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

Explanation:

Calcium oxide (CaO) + Water (H2O) --------> Calcium hydroxide [ Ca(OH)2 ]

Answer 2

${ \sf{CaO}} + {\bf{H_ 2O}} \sf \rightarrow Ca(OH)_2$

$\: \red{ \sf{CaO \: adds \: with \: H_ 2O \: to \: give \: Ca(OH)_2}}$