Concentration \[C{{N}^{-}}\] in \[0.1\,M\,HCN\] is \[[{{K}_{a}}=4\times {{10}^{-10}}]\] [RPET 2000]

Concentration \[C{{N}^{-}}\] in \[0.1\,M\,HCN\] is \[[{{K}_{a}}=4\ti

1.	Concentration \[C{{N}^{-}}\] in \[0.1\,M\,HCN\] is \[[{{K}_{a}}=4\times {{10}^{-10}}]\] [RPET 2000]
A.	\[2.5\times {{10}^{-6}}M\]
B.	\[4.5\times {{10}^{-6}}M\]
C.	\[6.3\times {{10}^{-6}}M\]
D.	\[9.2\times {{10}^{-6}}M\]
Answer» D. \[9.2\times {{10}^{-6}}M\]

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Concentration \[C{{N}^{-}}\] in \[0.1\,M\,HCN\] is \[[{{K}_{a}}=4\times {{10}^{-10}}]\] [RPET 2000]

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