A) 9
B) 3
C) 11
D) 10
Correct Answer: D
Solution :
Dissociation constant of \[HA={{10}^{-9}}\] \[HA\]⇌\[{{H}^{+}}+{{A}^{-}}\] \[[{{H}^{+}}]=\sqrt{\frac{{{K}_{a}}}{C}}\] \[=\sqrt{\frac{{{10}^{-9}}}{0.1}}\] ; \[[{{H}^{+}}]={{10}^{-4}}\] \[\therefore \,pH=4\] \[\because \,pH+pOH=14\] \[pOH=14-pH\]\[=14-4\] ; \[pOH=10\]You need to login to perform this action.
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