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Acidic Nature vs Percentage S Characters

A four-carbon...

Question

A four-carbon alkyne having weakly acidic character is ......................

A

1-Butyne

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B

2 butyne

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C

1,2 di methyl butyne

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D

propyl

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Solution

The correct option is A 1-Butyne
A four-carbon alkyne having weakly acidic character is 1-Butyne.
Terminal alkynes have weakly acidic H atom as H is attached to electronegative sp C atom.

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Q. A four carbon alkyne having weakly acidic character is....

Q. Assertion :2-butyne on treatment with

N a N H_{2}

followed by acidifictaion yields 1-butyne. Reason: Alkynes isomerizes on treatment with a strong base.

Q. Assertion :1- butyne forms white precipitate with ammoniacal silver nitrate solution while 2- butyne does not Reason: 1- butyne has a acidic hydrogen

Q. The number of acidic hydrogen atoms in 1- butyne and 2- butyne is _______ respectively.

Q. Assertion: 1-Butene has less dipole moment than 1-butyne.
Reason : 1-Butyne has more s-character.

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