1 butyne is acidic but 2 butyne is not acidic .Rationalize with equation
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Terminal alkyne behave as a acid because increasing in pi characters electron negativity increase.so terminal alkyane give h and behaves as acid where as 2butyne can't.
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C-H alkyne hydrogen is more acidic than alkene or alkane ones because the stability of the corresponding ion C-
The more acidic hydrogen of But-1-ene is one of the two allylic hydrogens in allfa position whith the respect to the double bond C=C.
In fact exist two resonance structures that stabilize the intermediate negative ion.
Is is necessary to underline that no resonance forms are possible in simple alkane, alkene or alkyne ions.
The scale of acidity is then But-1-ene (allylic hydrogen) > alkyne >alkene > alkane
The more acidic hydrogen of But-1-ene is one of the two allylic hydrogens in allfa position whith the respect to the double bond C=C.
In fact exist two resonance structures that stabilize the intermediate negative ion.
Is is necessary to underline that no resonance forms are possible in simple alkane, alkene or alkyne ions.
The scale of acidity is then But-1-ene (allylic hydrogen) > alkyne >alkene > alkane
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