Practice question
Question
Which alkene reacts with HCl to form a halide that gives CH₃CH₂CH=CH₂ on elimination?
Explanation
CH₃CH=CHCH₃ (2-butene) with HCl forms CH₃CHClCH₂CH₃ , which eliminates HCl with alcoholic KOH to form 1-butene ( CH₃CH₂CH=CH₂ ).