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Write two reactions to show acidic nature of ethyne?

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Ethyne (Acytylene)  is less acidic than water or ethanol. So it reacts with very strong Bases.

C2H2 reacts with sodium amide in liquid ammonia and forms sodium acetylide.
           Na  NH2   +  C2 H2    ---->     Na C2 H  + NH3

C2H2 also reacts with ButyLithium to form Lithium Acetylide  

C2 H2  +  Bu Li   -->   Li C2 H  +  Bu H

Above two reactions shows the acidic nature of Ethyne

Posted by

Sumit Saini

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