What is the best description of the first intermediate formed when 2-butyne reacts with HCl?

Allylic cation

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Vinylic cation

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Allylic anion

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Chloronium ion

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Solution

The correct option is B Vinylic cation
The first intermediate formed when 2-butyne reacts with HCl is Vinylic carbocation.

Hence, the correct option is B.

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