8 H⁺ + Cr₂O₇^2- + 3 H₂C₂O₄ → 7 H₂O + 6 CO₂ + 2 (Cr)³⁺

This is an oxidation-reduction (redox) reaction:

H₂C₂O₄ is a reducing agent, Cr₂O₇^2- is an oxidizing agent.

Reactants:

• H⁺
• Cr₂O₇^2-
• H₂C₂O₄ – Oxalic acid , Ethanedioic acid
  • Other names: Wood bleach , Oxalic acid dihydrate , H2ox ... show moreHOOCCOOH , Ethane-1,2-dioic acid , Oxalate , Ethanedioic acid dihydrate , Oxalic acid diammonium salt , Oxalic acid anhydrous , Ethane-1,2-dioate , Kyselina stavelova , Ethanedionic acid , Ethanedioate , Oxalic acid 2-Hydrate , Ethanedionate , Oxaalzuur , Oxalic Acid , Oxalic acid (aqueous) show less
  • Appearance: White crystals ; Hygroscopic colourless crystals or white powder ; Colorless, odorless powder or granular solid. [Note: The anhydrous form (COOH)2 is an odorless, white solid.]

Products:

• H₂O – Water, oxidane
  • Other names: Water (H2O) , Hydrogen hydroxide (HH or HOH) , Hydrogen oxide ... show moreDihydrogen monoxide (DHMO) (systematic name) , Hydrogen monoxide , Dihydrogen oxide , Hydric acid , Hydrohydroxic acid , Hydroxic acid , Hydrol , Μ-oxido dihydrogen , Κ1-hydroxyl hydrogen(0) show less
  • Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas
• CO₂
  • Names: Carbon dioxide , {{plainlist| , CO2 ... show moreCarbonic acid gas , Dry ice , [CO2] , Carbonic anhydride , R-744 , E-290 , E 290 , E290 , Carbonic acid anhydride , Carbon-12 dioxide , Methanedione , Carbon oxide , CO₂ , [Note: Normal constituent of air (about 300 ppm)]. show less
  • Appearance: Colorless gas ; Odourless colourless compressed liquefied gas ; Colorless, odorless gas. [Note: Shipped as a liquefied compressed gas. Solid form is utilized as dry ice.]
• Cr³⁺