3AgF + Na₃PO₄ = Ag₃PO₄ + 3NaF
3Ag⁺ + 3F⁻ + 3Na⁺ + PO₄³⁻ = Ag₃PO₄ + 3Na⁺ + 3F⁻
3Ag⁺ + PO₄³⁻ = Ag₃PO₄
Al₂(SO₄)₃ + 3K₂S + 6H₂O = 2Al(OH)₃↓ + 3H₂S↑ + 3K₂SO₄
2Al³⁺ + 3SO₄²⁻ + 6K⁺ + 3S²⁻ + 6H₂O = 2Al(OH)₃ + 3H₂S + 6K⁺ + 3SO₄²⁻
2Al³⁺ + 3S²⁻ + 6H₂O = 2Al(OH)₃ + 3H₂S