Question

a)2Ca+----=2CaO
b)CaO+----=Ca(OH)2
c)Ca(OH)2+----=CaCl+2H2O

Answer 1

$\bf a) \ 2Ca + O_2 \to 2CaO.$

$\bf b) \ CaO + H_2O \to Ca(OH)_2.$

$\bf c) \ Ca(OH)_2 + 2HCl \to CaCl_2 + 2H_2O.$