Exemplar Problems

Problem 4 : Classify the following reactions as addition, elimination, substitution, or rearrangement reactions:

(a) CH₄ + Cl₂ → CH₃Cl + HCl (b) CH₃COOH → CH₃CHO + H₂O (c) CH₃Br + KOH → CH₃OH + KBr (d) CH₃CH₂OH → CH₃CHO + H₂

Solution :

(a) CH₄ + Cl₂ → CH₃Cl + HCl: Substitution reaction (b) CH₃COOH → CH₃CHO + H₂O: Elimination reaction (c) CH₃Br + KOH → CH₃OH + KBr: Substitution reaction (d) CH₃CH₂OH → CH₃CHO + H₂: Dehydrogenation (Elimination) reaction