A) \[5\]
B) \[10\]
C) \[{{10}^{-5}}\]
D) \[{{10}^{-9}}\]
Correct Answer: D
Solution :
We know that, \[[{{H}^{+}}]={{10}^{-pH}}={{10}^{-5}}M\] and \[[{{H}^{+}}]\,[O{{H}^{-}}]={{10}^{-14}}\] \[\therefore \] \[{{[OH]}^{-}}=\frac{{{10}^{-14}}}{{{10}^{-5}}}={{10}^{-9}}\] Hence, hydroxyl ion concentration of solution is \[{{10}^{-9}}\].
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