The molecular formula of two carbon compounds are C4H8 and C3H8. Which one of the two is most likely to show addition reaction? Justify your answer. Also give the chemical equation to explain the process of addition reaction in this case.
Compound X has the molecular formula = C4H8 (CnH2n, alkene)
Compound Y has the molecular formula = C3H8 ( CnH2n+2, alkane)
C4H8 is unsaturated hydrocarbon, i.e. alkene (butene) and C3H8 is a saturated hydrocarbon, i.e. alkane (propane).
Saturated compounds undergo substitution reaction.
Unsaturated compounds undergo addition reaction at the multiple bonds. For example, 1-butene and 2-butene will add a chlorine molecule (Cl2) to form 1,2-dichlorobutane and 2,3-dichlorobutane, respectively. The reaction will be:
CH3CH2CH=CH2 + Cl2 → CH3CH2CH(Cl)−CH2Cl
CH3CH=CHCH3 + Cl2 → CH3CH(Cl)−CH(Cl)CH3
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- Chemical Properties of Carbon Compounds - Addition Reaction