Question

электролитическая диссоциация

Answer 1

1.
1) Ca(NO₃)₂ + K₂CO₃=2KNO₃ + CaCO₃↓
Ca²⁺ + 2NO₃⁻ + 2K⁺ + CO₃²⁻=2K⁺ + 2NO₃⁻ + CaCO₃↓
Ca²⁺ + CO₃²⁻= CaCO₃↓

2) 2HNO₃ + Ba(OH)₂ = Ba(NO₃)₂ + 2H₂O
2H⁺ + 2NO₃⁻ + Ba²⁺ + 2OH⁻ = Ba²⁺ + 2NO₃⁻ + 2H₂O
2H⁺ + 2OH⁻ =  2H₂O

3) Ba(NO₂)₂ + K₂SO₄ = 2KNO₃ + BaSO₄↓
Ba²⁺ + 2NO₂⁻ + 2K⁺ + SO₄²⁻ = 2K⁺+ 2NO₃⁻ + BaSO₄↓
Ba²⁺ + SO₄²⁻ =  BaSO₄↓

4) K₂CO₃ + 2HCI = 2KCI + CO₂↑+H₂O
2K⁺ + CO₃²⁻ + 2H⁺ + 2CI ⁻= 2K⁺ + 2CI⁻ + CO₂↑+H₂O
 CO₃²⁻ + 2H⁺ = CO₂↑+H₂O

5) Na₂CO₃ + H₂SO₄ = Na₂SO₄ + CO₂↑ + H₂O
2Na⁺ + CO₃²⁻ + 2H⁺ + SO₄²⁻ = 2Na⁺ + SO₄²⁻ + CO₂↑ + H₂O
 CO₃²⁻ + 2H⁺  =  CO₂↑ + H₂O

6) 2NaOH + Fe(NO₃)₂= 2NaNO₃ + Fe(OH)₂↓
  2Na⁺ + 2OH⁻ + Fe²⁺ + 2NO₃⁻ = 2Na⁺ + 2NO₃⁻ + Fe(OH)₂↓
2OH⁻ + Fe²⁺ =  Fe(OH)₂↓

7) Pb(NO₃)₂ + K₂SO₄ =2 KNO₃ + PbSO₄↓
Pb²⁺ + 2NO₃⁻ + 2K⁺ + SO₄²⁻ = 2K⁺ + 2NO₃⁻ + PbSO₄↓
Pb²⁺  + SO₄²⁻ =  PbSO₄↓

2.
1) Zn²⁺ + S²⁻ =ZnS
Zn²⁺ + 2CI⁻ + 2Na⁺ + S²⁻ = 2Na⁺ +  2CI⁻ + ZnS↓
 ZnCI₂ + Na₂S = 2NaCI + ZnS↓

 2) H⁺ + OH⁻ = H₂O
H⁺ + F⁻ + K⁺ + OH⁻ = K⁺ + F⁻ +H₂O
HF + KOH = KF +H₂O

3)Fe³⁺ + 3OH⁻ =  Fe(OH)₃↓
Fe³⁺ + 3CI⁻ + 3Na⁺ + 3OH⁻ = 3Na⁺ + 3CI⁻ + Fe(OH)₃↓
FeCI₃ + 3NaOH = 3NaCI + Fe(OH)₃↓

4) PbS +2H⁺ = H₂S↑ + Pb²⁺
PbS + 2H⁺ + 2NO₃⁻  = H₂S↑ + Pb²⁺ + 2NO₃⁻
PbS + 2HNO₃  = H₂S↑ + Pb(NO₃)₂