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Addition of Halogen Acid for Alkynes

Alkynes are l...

Question

Alkynes are less reactive than alkenes towards addition of $B r_{2}$ because.

A

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B

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C

Both are equally stable

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D

Original statement is incorrect

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Solution

The correct option is A

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Similar questions

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. Alkynes are less reactive than alkenes towards addition of

B r_{2}

Q. Statement-I : Alkynes are more reactive than alkenes towards electrophilic reagents like

H^{+}

.
Because
Statement-II : The alkyl carbocation formed from alkene is more stable than the vinyl carbocation formed from alkyne.

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. Assertion :Propene is more reactive than propyne towards addition of

B r_{2}

Reason: Propyne forms a less stable cyclic bromonium ion than propene.

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Addition of Halogen Acid for Alkynes

Standard XII Chemistry

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