The correct decreasing order of the basic str | vedclass

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Question

(C) The basic strength of an anion is inversely proportional to the acidic strength of its conjugate acid. First,identify the conjugate acids of the g

Vedclass · Accepted Answer

$CH_{3}^{-} > NH_{2}^{-} > CN^{-} > HS^{-}$

Vedclass · Answer

(C) The basic strength of an anion is inversely proportional to the acidic strength of its conjugate acid. First,identify the conjugate acids of the given bases: $CH_{3}^{-}$'s conjugate acid is $CH_{4}$ $(pKa \approx 50)$. $NH_{2}^{-}$'s conjugate acid is $NH_{3}$ $(pKa \approx 38)$. $CN^{-}$'s conjugate acid is $HCN$ $(pKa \approx 9.2)$. $HS^{-}$'s conjugate acid is $H_{2}S$ $(pKa \approx 7)$. Since the acidic strength order is $CH_{4}  NH_{2}^{-} > CN^{-} > HS^{-}$.

The correct decreasing order of the basic strength is

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