Verified answer

1)

а) Ca²⁺ + CO₃²⁻ = CaCO₃↓

CaCI₂ + Na₂CO₃ = CaCO₃↓ + 2NaCI

Ca²⁺ + 2CI⁻ + 2Na⁺ + CO₃²⁻ = CaCO₃↓ + 2Na⁺ + 2CI⁻

б) SO₃⁻ + 2H⁺  =  SO₂↑ + H₂O

Na₂SO₃ + 2HCI = 2NaCI + SO₂↑ + H₂O

2Na⁺ + SO₃⁻ + 2H⁺ + 2CI⁻ = 2Na⁺ + 2CI⁻ + SO₂↑ + H₂O

в) OH⁻ + H⁺  =  H₂O

NaOH + HCI = NaCI + H₂O

Na⁺ + OH⁻ + H⁺ + CI⁻ = Na⁺ + CI⁻ + H₂O

2)

а) Fe³⁺ + 3OH⁻ = Fe(OH)₃↓

FeCI₃ + 3NaOH = Fe(OH)₃↓ + 3NaCI

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

б) CO₃²⁻ + HCI = CO₂↑ + H₂O

Na₂CO₃ + 2HCI = 2NaCI + CO₂↑ + H₂O

Na⁺ + CO₃²⁻ + 2H⁺ + 2CI⁻ = 2Na⁺ + CI⁻ + CO₂↑ + H₂O

в) Ag⁺ + CI⁻ = AgCI↓

AgNO₃ + NaCI = AgCI↓ + NaNO₃

Ag⁺ + NO₃⁻ + Na⁺ + CI⁻ = AgCI↓ + Na⁺ + NO₃⁻