21 Chemistry -- Hydrocarbons

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Lab Preparation of Ethane by Kolbe's electrolysis

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Kolbe's electrolysis is the electrolysis of salts of monocarboxylic acids that gives higher alkanes. This process is used in lab preparation of ethane.

2R-COONa + 2H₂O (electrolysis)= R-R + 2CO₂ + 2NaOH + He

At anode

2CH₃COO^-- 2e^-⟶2CH₃COO⟶ 2CH₃ + 2CO₂

2CH₃⟶C₂H₆

At Cathode

2Na⁺+ 2e^-⟶2Na

2Na + H₂O⟶2NaOH

eleven chemistry

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