1.

Compare the acidic strengths of ethyne, propyne and 2-butyne.

Answer»

Solution :Ethyne has two ACIDIC hydrogen atoms. Propyne has only one acidic hydrogen ATOM. 2-Butyne has no acidic hydrogen atoms.
Alkyne with hydrogen atom PRESENT attached directly to .sp hybridised carbon atom is acidic.
Hence, the correct order of acidic strength is : Ethyne `GT` Propyne `gt` 2-Butyne.


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