Verified answer

1.MgCl₂+Na₂SO₄↔MgSO₄+2NaCl

Mg²⁺+2Cl⁻+2Na⁺+SO₄²⁻↔Mg²⁺+SO₄²⁻+2Na⁺+2Cl⁻

2.2NaOH+H₂SO₄=Na₂SO₄+2H₂O

2Na⁺+2OH⁻+2H⁺+SO₄²⁻=2Na⁺+SO₄²⁻+2H₂O

OH⁻+H⁺=H₂O

3.Fe₂(SO₄)₃+6KOH=2Fe(OH)₃↓+3K₂SO₄

2Fe³⁺3SO₄²⁻+6K⁺+6OH⁻=2Fe(OH)₃+6K⁺3SO₄²⁻

2Fe³⁺+6OH⁻=2Fe(OH)₃

4.K₂S+2HCl=2KCl+H₂S↑

2K⁺+S²⁻+2H⁺+2Cl⁻=2K⁺+2Cl⁻+H₂S

S²⁻+2H⁺=H₂S

5.Na₂SO₄+2HCl↔2NaCl+H₂SO₄

2Na⁺SO₄²⁻+2H⁺+2Cl⁻↔2Na⁺+2Cl⁻+2H⁺SO₄²⁻

6.Ba(NO₃)₂+Na₂SO₄=BaSO₄↓+2NaNO₃

Ba²⁺+2NO₃⁻+2Na⁺+SO₄²⁻=BaSO₄+2Na⁺+2NO₃⁻

Ba²⁺+SO₄²⁻=BaSO₄