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The reaction of propene with HOCl (Cl2 + H2O) proceeds through the intermediate:

1. CH3 – CH(OH) – CH2+
2. CH3 – CHCl – CH2+
3. CH3 – CH+ – CH2 – OH
4. CH3 – CH+ – CH2 – Cl

Correct answer: CH3 – CH+ – CH2 – Cl

Solution

The correct option represents a carbocation intermediate where the chlorine atom has added to the propene, resulting in a positively charged carbon adjacent to the chlorine. This structure is consistent with the electrophilic addition mechanism of HOCl to propene, where the formation of a carbocation is a key step.

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