Which of the following is the most acidic sub | vedclass

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(C) The acidity of amines depends on the stability of the conjugate base formed after the loss of a proton $(H^+)$. In these compounds,the acidity is

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$NH_3$

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(C) The acidity of amines depends on the stability of the conjugate base formed after the loss of a proton $(H^+)$. In these compounds,the acidity is primarily determined by the electron-donating effect (inductive effect) of the alkyl groups attached to the nitrogen atom. Alkyl groups are electron-releasing ($+I$ effect),which destabilizes the conjugate base (amide ion) by increasing electron density on the nitrogen atom. Therefore,the compound with the fewest or least electron-donating alkyl groups will be the most acidic. Comparing the options: $NH_3$ has no alkyl groups. $CH_3NH_2$ has one methyl group. $CH_3CH_2NH_2$ has one ethyl group (more $+I$ effect than methyl). $(CH_3)_2CHNH_2$ has two methyl groups. Thus,$NH_3$ is the most acidic among the given options.

Which of the following is the most acidic substance?

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