Identify the order of reactions in the mechanism of an addition reaction between HCl and 2-butene.
1. reaction of a chloride ion with an intermediate to form 2-chlorobutane
2. formation of a secondary carbocation intermediate
3. addition of a proton to 2-butene

Question

Quizplus · Accepted Answer

The correct order is: 3 (addition of a proton to 2-butene to form a carbocation intermediate), 2 (formation of a secondary carbocation intermediate), and then 1 (reaction of a chloride ion with the intermediate to form 2-chlorobutane). This sequence follows the mechanism of electrophilic addition in alkenes.

Identify the Order of Reactions in the Mechanism of an Addition