1.
- AgNO₃ + NaI → AgI↓ + NaNO₃
Ag⁺ + NO₃⁻ + Na⁺ + I⁻ → AgI↓ + Na⁺ + NO₃⁻
Ag⁺ + I⁻ → AgI↓
- H₃PO₄ + 3KOH → K₃PO₄ + 3H₂O
3H⁺ + PO₄³⁻ + 3K⁺ + 3OH⁻ → 3K⁺ + PO₄³⁻ + 3H₂O
3H⁺+ 3OH⁻ → 3H₂O |:3
H⁺ + OH⁻ → H₂O
- Na₂SiO₃+ 2HNO₃ → 2NaNO₃ + H₂SiO₃
2Na⁺ + SiO₃²⁻ + 2H⁺ + 2NO₃⁻ → 2Na⁺ + 2NO₃⁻ + H₂SiO₃
2H⁺ + SiO₃²⁻ → H₂SiO₃
- 2K₃PO₄ + 3Ca(NO₃)₂ → 6KNO₃ + Ca₃(PO₄)₂↓
6K⁺ + 2PO₄³⁻ + 3Ca²⁺ + 6NO₃⁻ → 6K⁺ + 6NO₃⁻ + Ca₃(PO₄)₂↓
3Ca²⁺ + 2PO₄³⁻ → Ca₃(PO₄)₂↓
2.
- CO₂ — H₂O, CaO
- HNO₃ — Mg, Al₂O₃
- Al — H₂SO₄, NaOH
- FeO — HCl, SO₂