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Assertion : Alkynes are more reactive to...

Assertion : Alkynes are more reactive towards nucleophilic addition reaction as compared to alkenes.
Reason : Alkynes contain two pi bonds, while alkenes have only one pi bond.

A

If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.

B

If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.

C

If Assertion is correct , but Reason is incorrect.

D

If both Assertion and Reason are incorrect .

Text Solution

Verified by Experts

The correct Answer is:
B
Since sp-hybridized carbon in alkynes is more electronegative than `sp^2`-hybridized carbon in akenes , therefore , nucleophiles can attack sp-hybridized carbon more easily than `sp^2` - carbon in alkenes.
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The hydration of alkenes in the presence of acids proceed via carbocation mechanisms as given below: and that carbocation is formed which is most stable, It is observed that alkenes are more reactive than alkynes towards any electrophile. This reaction, i.e., the electrophilic addition reaction of alkenes and alkynes with symmetrical addendum This shows that all reactions of alkenes and alkynes for electrophilic addition reactions may either take place via intermediates of transition state.

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