Which of the listed substances will calcium hydroxide interact with: CO2, H3PO4, H2O, N2O5, FeO, CrCl3, HNO2, BaCl2

| November 24, 2020 | education

Which of the listed substances will calcium hydroxide interact with: CO2, H3PO4, H2O, N2O5, FeO, CrCl3, HNO2, BaCl2, Fe (NO3) 2. Give the equations of possible reactions in molecular and ionic form.

1. Ca(OH)₂ + CO₂ = CaCO₃ + H₂O
Ca²⁺ + 2OH⁻ + CO₂ = Ca²⁺ + CO₃²⁻ + H₂O
2OH⁻ + CO₂ = CO₃²⁻ + H₂O

2. 3Ca(OH)₂ + 2H₃PO₄ = Ca₃(PO₄)₂ + 3H₂O
3Ca²⁺ + 6OH⁻ + 6H⁺ + 2PO₄³⁻ = 3Ca²⁺ + 2PO₄³⁻ + 3H₂O
6OH⁻ + 6H⁺ = 3H₂O

3. Ca(OH)₂ + 2H₂O = CaO + 3H₂O
Ca²⁺ + 4OH⁻ + 2H⁺ = CaO + 3H⁺ + 3OH⁻
Ca²⁺ + OH⁻ = CaO + H⁺

4. Ca(OH)₂ + N₂O₅ = Ca(NO₃)₂ + H₂O
Ca²⁺ + 2OH⁻ + N₂O₅ = Ca²⁺ + 2NO₃⁻ + H₂O
2OH⁻ + N₂O₅ = 2NO₃⁻ + H₂O

5. Ca(OH)₂ + FeO ≠

6. 3Ca(OH)₂ + 2CrCl₃ = 3CaCl₂ + 2Cr(OH)₃
3Ca²⁺ + 6OH⁻ + 2Cr³⁺ + 6Cl⁻ = 3Ca²⁺ + 6Cl⁻ + 2Cr(OH)₃
6OH⁻ + 2Cr³⁺ = 2Cr(OH)₃

7. Ca(OH)₂ + 2HNO₂ = Ca(NO₂)₂ + 2H₂O
Ca²⁺ + 2OH⁻ + 2H⁺ + 2NO₂⁻ = Ca²⁺ + 2NO₂⁻ + 2H₂O
2OH⁻ + 2H⁺ = 2H₂O

8. Ca(OH)₂ + BaCl₂ ≠

9. Ca(OH)₂ + Fe(NO₃)₂ = Ca(NO₃)₂ + Fe(OH)₂
Ca²⁺ + 2OH⁻ + Fe²⁺ + 2NO₃⁻ = Ca²⁺ + 2NO₃⁻ + Fe(OH)₂
2OH⁻ + Fe²⁺ = Fe(OH)₂



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