Question

Ca(No3)2+K2CO3=Caco3+Kno3

Answer 1

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

б) Na₂CO₃ + 2HCI = 2NaCI + CO₂↑+H₂O
2Na⁺ + CO₃²⁻ + 2H⁺ + 2CI ⁻= 2Na⁺ + 2CI⁻ + CO₂↑+H₂O
 CO₃²⁻ + 2H⁺ = CO₂↑+H₂O

в)  LiOH + HNO₃= LiNO₃ + H₂O
  Li⁺ + OH⁻ +H⁺ + NO₃⁻ = Li⁺+NO₃⁻ + H₂O
OH⁻ +H⁺  = H₂O

3.
a) H₂SO₄+BaCI₂= BaSO₄↓ + 2HCI
2H⁺ + SO₄²⁻+ Ba²⁺ + 2CI⁻=BaSO₄↓ +2H⁺ + 2CI⁻
 SO₄²⁻+ Ba²⁺ =BaSO₄↓

б)  FeCI₂+AgNO₃ =Fe(NO₃)₂+ AgCI↓
Fe²⁺ + 2CI ⁻ + Ag⁺ +NO₃⁻ =Fe²⁺+2 NO₃⁻ +AgCI↓
 2CI ⁻ + Ag⁺ =AgCI↓

в) Ba(OH)₂  +Na₂CO₃ =BaCO₃↓+2NaOH
Ba²⁺ + 2OH⁻ +2Na⁺ + CO₃²⁻= BaCO₃↓+2Na⁺ + 2OH⁻
Ba²⁺  + CO₃²⁻= BaCO₃↓+2Na⁺ + 2OH⁻

4.
a) H₂SO₄+BaCI₂= BaSO₄↓ + 2HCI
2H⁺ + SO₄²⁻+ Ba²⁺ + 2CI⁻=BaSO₄↓ +2H⁺ + 2CI⁻
 SO₄²⁻+ Ba²⁺ =BaSO₄↓

 б) HCI +AgNO₃ = AgCI↓ +HNO₃
H⁺ + CI ⁻+ Ag⁺ +NO₃⁻=AgCI↓ +H⁺ +NO₃⁻
 CI ⁻+ Ag⁺ = AgCI↓