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What is the decreasing order of strength of the bases $OH^-,NH_2^-,H-C \equiv C^- $ and $CH_3 ^{-}CH_2^-$?

$ (a)\;CH_3 - CH_2 > NH_2 > H-C \equiv C^- > OH^- \\ (b)\;H-C \equiv_3 - C^- > CH_3 - CH_2^- > NH_2 > OH^- \\ (c)\;OH^- > NH_2^{-} > H-C \equiv C^- > CH_3 -CH_2^- \\ (d)\;NH_2 > H-C \equiv C^- > OH^ > CH_3 - CH_2^- $

1 Answer

The conjugate base of a strong acid is weaker while the conjugate base of weak acid is stronger.
So $CH_3 - CH_2 > NH_2 > H-C \equiv C^- > OH^- $
Hence a is the correct answer.
answered Feb 22, 2014 by meena.p
 

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