Verified Assessment Data Quality & Trust Engine
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The 4-Stage Content Verification Pipeline
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WAEC Chemistry · Organic Chemistry (Hydrocarbons)
Which of the following organic compounds will rapidly decolorize acidified potassium permanganate (KMnO₄) solution?
Ethene is an unsaturated hydrocarbon possessing a reactive carbon-carbon double bond (C=C). It undergoes an addition oxidation reaction with Baeyer's reagent (acidified KMnO₄), reducing the purple MnO₄⁻ ions to colorless Mn²⁺. Saturated alkanes (ethane, methane, propane) cannot undergo addition reactions and remain unreactive under standard conditions.
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