Ответ:
Объяснение:
а)
CaCO₃ + 2HNO₃ = Ca(NO₃)₂ + CO₂↑ + H₂O
CaCO₃ + 2H⁺ + 2NO₃⁻ = Ca²⁺ + 2NO₃⁻ + CO↑₂ + H₂O
CaCO₃ + 2H⁺ = Ca²⁺ + CO₂↑ + H₂O
б)
6NaOH + Fe₂(SO₄)₃ = 2Fe(OH)₃↓+ 3Na₂SO₄
6Na⁺ + 6OH⁻ + 2Fe³⁺ + 3SO₄²⁻ = FeOH₃↓ + 6Na⁺ + 3SO₄²⁻
3OH⁻ + Fe³⁺ = FeOH₃↓
в)
H₃PO₄ + 3KOH = K₃PO₄ + 3H₂O
3K⁺ + 3OH⁻ + H₃PO₄ = 3K⁺ + PO₄³⁻ + 3H2O
3OH⁻ + H₃PO₄ = 3H2O + PO₄³⁻
г)
Zn(OH)₂ + 2NaOH = Na₂ZnO₂ + 2H₂O
Zn(OH)₂ + 2Na⁺ + 2OH⁻ = 2Na⁺ + ZnO₂²⁻ + 2H₂O
Zn(OH)₂ + 2OH⁻ = ZnO₂²⁻+ 2H₂O
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Answers & Comments
Ответ:
Объяснение:
а)
CaCO₃ + 2HNO₃ = Ca(NO₃)₂ + CO₂↑ + H₂O
CaCO₃ + 2H⁺ + 2NO₃⁻ = Ca²⁺ + 2NO₃⁻ + CO↑₂ + H₂O
CaCO₃ + 2H⁺ = Ca²⁺ + CO₂↑ + H₂O
б)
6NaOH + Fe₂(SO₄)₃ = 2Fe(OH)₃↓+ 3Na₂SO₄
6Na⁺ + 6OH⁻ + 2Fe³⁺ + 3SO₄²⁻ = FeOH₃↓ + 6Na⁺ + 3SO₄²⁻
3OH⁻ + Fe³⁺ = FeOH₃↓
в)
H₃PO₄ + 3KOH = K₃PO₄ + 3H₂O
3K⁺ + 3OH⁻ + H₃PO₄ = 3K⁺ + PO₄³⁻ + 3H2O
3OH⁻ + H₃PO₄ = 3H2O + PO₄³⁻
г)
Zn(OH)₂ + 2NaOH = Na₂ZnO₂ + 2H₂O
Zn(OH)₂ + 2Na⁺ + 2OH⁻ = 2Na⁺ + ZnO₂²⁻ + 2H₂O
Zn(OH)₂ + 2OH⁻ = ZnO₂²⁻+ 2H₂O