Values of dissociation constant, \[{{K}_{a}}\] are given as follows:Acid\[{{K}_{a}}\]HCN\[6.2\times {{10}^{-10}}\]HF\[7.2\times {{10}^{-4}}\]HNCX\[4.0\times {{10}^{-4}}\]Correct order of increasing base strength of the base \[C{{N}^{-}}\text{, }{{F}^{-}}\]and \[NO_{2}^{-}\] will be:

\[NO_{2}^{-}<{{F}^{-}}<C{{N}^{-}}\]

Values of dissociation constant, \[{{K}_{a}}\] are given as follows:Ac

1.	Values of dissociation constant, \[{{K}_{a}}\] are given as follows:Acid\[{{K}_{a}}\]HCN\[6.2\times {{10}^{-10}}\]HF\[7.2\times {{10}^{-4}}\]HNCX\[4.0\times {{10}^{-4}}\]Correct order of increasing base strength of the base \[C{{N}^{-}}\text{, }{{F}^{-}}\]and \[NO_{2}^{-}\] will be:
A.	\[{{F}^{-}}<C{{N}^{-}}<NO_{_{2}}^{-}\]
B.	\[NO_{_{2}}^{-}<C{{N}^{-}}<{{F}^{-}}\]
C.	\[{{F}^{-}}<NO_{2}^{-}<C{{N}^{-}}\]
D.	\[NO_{2}^{-}<{{F}^{-}}<C{{N}^{-}}\]
Answer» D. \[NO_{2}^{-}<{{F}^{-}}<C{{N}^{-}}\]

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Values of dissociation constant, \[{{K}_{a}}\] are given as follows:Acid\[{{K}_{a}}\]HCN\[6.2\times {{10}^{-10}}\]HF\[7.2\times {{10}^{-4}}\]HNCX\[4.0\times {{10}^{-4}}\]Correct order of increasing base strength of the base \[C{{N}^{-}}\text{, }{{F}^{-}}\]and \[NO_{2}^{-}\] will be:

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