Răspuns:
NaOH + HCl----> NaCl + H2O
Na⁺OH⁻ + H⁺Cl⁻---> Na⁺Cl⁻ + H2O
H⁺ + OH⁻---> H2O
CaO + H2SO4---> CaSO4 + H2O
Ca²⁺O²⁻ + H2⁺SO4²⁻---> Ca²⁺SO4²⁻ + H2O
H⁺ + OH⁻---> H2O
Ca(OH)2 + H2SO4 ---> CaSO4 + 2H2O
Ca²⁺(OH)2⁻ + H2⁺SO4²⁻----> Ca²⁺SO4²⁻ + 2H2O
2H⁺ + 2OH⁻---> 2H2O
Explicație:
