The correct order of acidic nature of the fol | vedclass

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(B) The acidity of alkynes depends on the stability of the conjugate base formed after the removal of the acidic proton.Terminal alkynes ($I$ and $III

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$II < III < I$

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(B) The acidity of alkynes depends on the stability of the conjugate base formed after the removal of the acidic proton.Terminal alkynes ($I$ and $III$) have an acidic hydrogen atom attached to an $sp$-hybridized carbon,whereas internal alkynes $(II)$ do not have any acidic hydrogen.Compound $(II)$ $(CH_3-C \equiv C-CH_3)$ has no acidic hydrogen,so it is the least acidic.Between $(I)$ $(HC \equiv CH)$ and $(III)$ $(CH_3-C \equiv CH)$,the methyl group in $(III)$ exerts a $(+I)$ effect,which destabilizes the conjugate base (alkynide ion).Therefore,the stability of the conjugate base follows the order: $HC \equiv C^- > CH_3-C \equiv C^-$.Thus,the correct order of acidity is: $II < III < I$.

The correct order of acidic nature of the following alkynes is:
$I$. $HC \equiv CH$
$II$. $CH_3-C \equiv C-CH_3$
$III$. $CH_3-C \equiv CH$

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The correct order of acidic nature of the following alkynes is:$I$. $HC \equiv CH$$II$. $CH_3-C \equiv C-CH_3$$III$. $CH_3-C \equiv CH$