\(\rm KCIO_3\xrightarrow{Moist\ oxalic\ acid}?\)

CONCEPT:

Reaction of Potassium Chlorate (KClO₃) with Moist Oxalic Acid

• Potassium chlorate (KClO₃) undergoes a redox reaction in the presence of moist oxalic acid (C₂H₂O₄).
• Oxalic acid acts as a reducing agent, while KClO₃ acts as an oxidizing agent.
• During the reaction, KClO₃ is reduced to chlorine dioxide (ClO₂), and oxalic acid is oxidized to carbon dioxide (CO₂).
• Potassium ions from KClO₃ combine with oxalate ions to form potassium oxalate (K₂C₂O₄).

EXPLANATION:

KClO₃ + C₂H₂O₄ → K₂C₂O₄ + ClO₂ + CO₂

• Given reaction:
• Steps in the reaction:
  • Oxalic acid (C₂H₂O₄) is oxidized to carbon dioxide (CO₂).
  • KClO₃ is reduced to chlorine dioxide (ClO₂).
  • Potassium ions (K⁺) from KClO₃ react with oxalate ions (C₂O₄²⁻) to form potassium oxalate (K₂C₂O₄).

Therefore, the correct answer is Option 3: K₂C₂O₄ + ClO₂ + CO₂.