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Question: Select the correct order of basic nature....

Select the correct order of basic nature.

A

CH3CH2−>CH2=CH−>CH≡C−>OH−CH_{3}CH_{2}^{-} > CH_{2} = CH^{-} > CH \equiv C^{-} > OH^{-}

B

CH3CH2−>CH≡C−>CH2=CH−>OH−CH_{3}CH_{2}^{-} > CH \equiv C^{-} > CH_{2} = CH^{-} > OH^{-}

C

CH3CH2−>OH−>CH≡C−>CH2=CH−CH_{3}CH_{2}^{-} > OH^{-} > CH \equiv C^{-} > CH_{2} = CH^{-}

D

OH−>CH≡C−>CH2=CH−>CH3CH2−OH^{-} > CH \equiv C^{-} > CH_{2} = CH^{-} > CH_{3}CH_{2}^{-}

Answer

CH3CH2−>CH2=CH−>CH≡C−>OH−CH_{3}CH_{2}^{-} > CH_{2} = CH^{-} > CH \equiv C^{-} > OH^{-}

Explanation

Solution

: Order of acidic strength is

H2O>CH≡CH>CH2=CH2>CH3CH3H_{2}O > CH \equiv CH > CH_{2} = CH_{2} > CH_{3}CH_{3}

We know that a stronger acid has weak conjugate base and vice versa, thus order of basic nature of given compounds is.

CH3−CH2−>CH2=CH−>CH≡C−>OH−CH_{3} - CH_{2}^{-} > CH_{2} = CH^{-} > CH \equiv C^{-} > OH^{-}