3)Al(NO₃)₃ + 3KOH = Al(OH)₃↓+3KNO₃Al³⁺ + 3NO₃⁻ + 3K⁺ +3OH⁻ = Al(OH)₃↓ + 3K⁺ + 3NO₃⁻Al³⁺ + 3OH⁻ = Al(OH)₃↓
4) 3AgNO₃ + AlCl₃ = 3AgCl↓+ Al(NO₃)₃
3Ag⁺ + 3NO₃⁻ + Al³⁺ + 3Cl⁻ = 3AgCl↓+ Al³⁺ + 3NO₃⁻
3Ag⁺ + 3Cl⁻ = 3AgCl↓
2) 2H₃PO₄ + 3Ca(OH)₂ = Ca₃(PO₄)₂↓ + 6H₂O
6H⁺ + PO₄³⁻ + 3Ca³⁺ + 6OH⁻ = Ca₃(PO₄)₂↓ + 6H₂O
Cu²⁺ + 2Cl⁻ + 2Na⁺ + 2OH⁻ = Cu(OH)₂↓ + 2Na⁺ + 2Cl⁻
Cu²⁺ + 2OH⁻ = Cu(OH)₂↓
3)Al(NO₃)₃ + 3KOH = Al(OH)₃↓+3KNO₃
Al³⁺ + 3NO₃⁻ + 3K⁺ +3OH⁻ = Al(OH)₃↓ + 3K⁺ + 3NO₃⁻
Al³⁺ + 3OH⁻ = Al(OH)₃↓
4) 3AgNO₃ + AlCl₃ = 3AgCl↓+ Al(NO₃)₃
3Ag⁺ + 3NO₃⁻ + Al³⁺ + 3Cl⁻ = 3AgCl↓+ Al³⁺ + 3NO₃⁻
3Ag⁺ + 3Cl⁻ = 3AgCl↓
2) 2H₃PO₄ + 3Ca(OH)₂ = Ca₃(PO₄)₂↓ + 6H₂O
6H⁺ + PO₄³⁻ + 3Ca³⁺ + 6OH⁻ = Ca₃(PO₄)₂↓ + 6H₂O