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Successive dissociation constants of `H_(2)CO_(3)` are `K_(a_(1)) = 10^(-3)` and `K_(a_(2)) = 10^(-6)`. An aqueous solution contains `0.1 MH_(2)CO_(3)` and `0.1 M HCI` at `25^(@)C` If solution contains only `0.1 M H_(2)CO_(3)` then the concentration of `CO_(3)^(2-)` at equilibrium in the solution will be :A. `10^(-6) M`B. `10^(-12)M`C. `10^(-9)M`D. `10^(-12)M` |
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