Cr₂(SO₄)₃ +3Br₂ + 16NaOH = 2Na₂CrO₄ + 6NaBr + 3Na₂SO₄ + 8H₂O
2Cr⁺³ - 6e → 2Cr⁺⁶ | 2 | 1
Br₂⁰ + 2e → 2Br⁻ | 6 | 3
Cr₂(SO₄)₃ +3Br₂ + 16NaOH = 2Na₂CrO₄ + 6NaBr + 3Na₂SO₄ + 8H₂O
2Cr⁺³ - 6e → 2Cr⁺⁶ | 2 | 1
Br₂⁰ + 2e → 2Br⁻ | 6 | 3