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What is the concentration of CH(3)COOH(a...

What is the concentration of `CH_(3)COOH(aq.)` in a solution prepared by dissolving 0.01 mole of `NH_(4)^(+)CH_(3)COO^(-)` in 1 L `H_(2)O`? `[K_(a(CH_(3)COOH))=1.8xx10^(-5)),K_(b(NH_(4)OH)=1.8xx10^(-5))]`

A

`5.55xx10^(-5)`

B

`0.10`

C

`6.4xx10^(-4)`

D

`5.55xx10^(-3)`

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