5 CH2O (aq) + 4 KMnO4 (aq) + 6 H2SO4 (aq) → 4 MnSO4 (aq) + 2 K2SO4 (aq) + 5 CO2 (g) + 11 H2O (l)
This is an oxidation-reduction (redox) reaction:
4 MnVII + 20 e- → 4 MnII (reduction)
5 C0 - 20 e- → 5 CIV (oxidation)
KMnO4 is an oxidizing agent, CH2O is a reducing agent.
This is a gas evolution reaction, CO2 is the formed gas.
Reactants:
- CH2O – Formaldehyde , Methanal
- Other names: Methyl aldehyde , Methylene glycol , Methylene oxide
- Appearance: Colorless gas ; Colourless gas with pungent odour ; Colourless liquid with pungent odour ; Nearly colorless gas with a pungent, suffocating odor. [Note: Often used in an aqueous solution (see specific listing for Formalin).]
- KMnO4 – Potassium manganate(VII)
- H2SO4 – Sulfuric acid
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