Arrange the following species in the decreasi | vedclass

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Question

(B) The basic strength of conjugate bases is inversely proportional to the acidic strength of their corresponding conjugate acids.The conjugate acids

Vedclass · Accepted Answer

$NH_2^{-} > OH^{-} > F^{-}$

Vedclass · Answer

(B) The basic strength of conjugate bases is inversely proportional to the acidic strength of their corresponding conjugate acids.The conjugate acids are: $(a) H_2O, (b) NH_3, (c) HF$.The acidic strength order of these acids is: $HF > H_2O > NH_3$.Since the acidic strength is $HF > H_2O > NH_3$,the basic strength of their conjugate bases will be the reverse: $NH_2^{-} > OH^{-} > F^{-}$.Therefore,the correct order is $NH_2^{-} > OH^{-} > F^{-}$.

Arrange the following species in the decreasing order of their basic strength: $(a) OH^{-}, (b) NH_2^{-}, (c) F^{-}$.

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