A solution of \[0.1\text{ }M\text{ }NaZ\] has \[pH=8.90.\]The \[{{K}_{a}}\] of HZ is

A solution of \[0.1\text{ }M\text{ }NaZ\] has \[pH=8.90.\]The \[{{K}_{

1.	A solution of \[0.1\text{ }M\text{ }NaZ\] has \[pH=8.90.\]The \[{{K}_{a}}\] of HZ is
A.	\[6.3\times {{10}^{-11}}\]
B.	\[6.3\times {{10}^{-10}}\]
C.	\[1.6\times {{10}^{-5}}\]
D.	\[1.6\times {{10}^{-6}}\]
Answer» D. \[1.6\times {{10}^{-6}}\]

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A solution of \[0.1\text{ }M\text{ }NaZ\] has \[pH=8.90.\]The \[{{K}_{a}}\] of HZ is

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