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The pH of a solution containing 0.4 M HC...

The pH of a solution containing 0.4 M `HCO_(3)^(-)` and 0.2 M `CO_(3)^(2-)` is :
`[K_(a1)(H_(2)CO_(3))=4xx10^(-7)` , `K_(a2)(HCO_(3)^(-))=4xx10^(-11)]`

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The pH of the a solution containing 0.4 M HCO_(3)^(-) is : [K_(a_(1)) (H_(2)CO_(3)) = 4 xx 10^(-7), K_(a_(2)) (HCO_(3)^(-)) = 4 xx 10^(-11)]

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