а)
CaCl₂ + 2AgNO₃ = Ca(NO₃)₂ + 2AgCl↓
Ca²⁺ +2Cl⁻ + 2Ag⁺ + 2NO₃⁻ = Ca²⁺+ 2NO₃⁻ + 2AgCl↓
Ag⁺ + Cl⁻ = AgCl↓
б)
Ba(OH)₂ + 2HCl = BaCl₂ + 2H2O
Ba²⁺ + 2OH⁻ + 2H⁺ + 2Cl⁻ = Ba²⁺ + 2Cl⁻ + 2H₂O
2OH⁻ + 2H⁺ = 2H₂O
H⁺ + OH⁻ = H₂O
а)
CaCl₂ + 2AgNO₃ = Ca(NO₃)₂ + 2AgCl↓
Ca²⁺ +2Cl⁻ + 2Ag⁺ + 2NO₃⁻ = Ca²⁺+ 2NO₃⁻ + 2AgCl↓
Ag⁺ + Cl⁻ = AgCl↓
б)
Ba(OH)₂ + 2HCl = BaCl₂ + 2H2O
Ba²⁺ + 2OH⁻ + 2H⁺ + 2Cl⁻ = Ba²⁺ + 2Cl⁻ + 2H₂O
2OH⁻ + 2H⁺ = 2H₂O
H⁺ + OH⁻ = H₂O