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Oxalic acid + potassium dichromate
Accepted Answer
Oxalic acid (H₂C₂O₄) reacts with potassium dichromate (K₂Cr₂O₇) in an acidic solution to form carbon dioxide (CO₂), chromium(III) ions (Cr³⁺), and water (H₂O). This reaction is a redox reaction where dichromate acts as an oxidizing agent and oxalic acid as a reducing agent. The balanced chemical equation for the reaction is:
3H₂C₂O₄ + K₂Cr₂O₇ + 7H₂SO₄ → 3CO₂ + Cr₂(SO₄)₃ + K₂SO₄ + 7H₂O
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