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Covalent Bond

2-butyne is l...

Question

2-butyne is less reactive than butene towards electrophilic addition reaction. If true press 1 else 0.

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Solution

So the transition state of alkyl cation will be more stable than that of Vinyl cation. Therefore, alkynes are less reactive than alkene towards electrophilic addition reaction.

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Q. Identify the incorrect statement/statements :
(i) Alkynes are more reactive than alkenes towards electrophilic addition reaction
(ii) Alkynes are less reactive than alkenes towards electrophilic addition reaction
(iii) Alkynes decolourise

B r_{2}

water
(iv) Addition of

H B r

to alkenes in presence of peroxide proceeds via Markovnikov's rule

Q. Identify the incorrect statement/statements :
(i) Alkynes are more reactive than alkenes towards electrophilic addition reaction
(ii) Alkynes are less reactive than alkenes towards electrophilic addition reaction
(iii) Alkynes decolourise

B r_{2}

water
(iv) Addition of

H B r

to alkenes in presence of peroxide proceeds via Markovnikov's rule

Anisole is less reactive than phenol towards electrophilic substitution reactions. Why ?

C \equiv C

π

bond and it is _____ reactive than

- C | = C | -

towards electrophilic addition reaction.

Correct reactivity order towards electrophilic addition reaction is:

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