CH2O (aq) + I2 (s) + 3 NaOH (aq) → HCOONa (aq) + 2 NaI (aq) + 2 H2O (l)
This is an oxidation-reduction (redox) reaction:
C0 - 2 e- → CII (oxidation)
2 I0 + 2 e- → 2 I-I (reduction)
CH2O is a reducing agent, I2 is an oxidizing agent.
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).]
- I2
- NaOH
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