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The [H^(+)] of a resulting solution that...

The `[H^(+)]` of a resulting solution that is 0.01 M acetic acid `(K_(a)=1.8xx10^(-5))` and 0.01 M in benzoic acid `(K_(a)=6.3xx10^(-5))` :

A

`9xx10^(-4)`

B

`81xx10^(-4)`

C

`9xx10^(-5)`

D

`2.8xx10^(-3)`

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