Precipitation Reaction
Solution A
Solution B
↓ Precipitate forms
BaCl₂ + Na₂SO₄ → BaSO₄↓ + 2NaCl
Net ionic: Ba²⁺ + SO₄²⁻ → BaSO₄(s)
Solubility rules:
Most sulfates insoluble (BaSO₄, PbSO₄) · Most iodides insoluble (PbI₂, AgI) · All nitrates soluble · AgCl insoluble · Most carbonates insoluble · Most hydroxides insoluble except Group 1
Most sulfates insoluble (BaSO₄, PbSO₄) · Most iodides insoluble (PbI₂, AgI) · All nitrates soluble · AgCl insoluble · Most carbonates insoluble · Most hydroxides insoluble except Group 1