Question

Identify the base formed by the action of water on the following compounds and write the chemical equations. a) MgO b) CaO

Answer 1

Mg+O2----MgO (magnesium oxide)

Ca+O2------CaO (calcium oxide)

but with reaction with water they forms:

MgO +H2O = Mg(OH)2

Cao + H2O = Ca(OH)2

hope it helps you friend

Answer 2

MgO +H2O = Mg(OH)2
Cao + H2O = Ca(OH)2