In an aqueous solution the ionisation constants for carbonic acid are `K_(1)=4.2xx10^(-7)andK_(2) =4.8xx10^(-11)`. Select the correct statement for a saturated 0.034 M solution of the carbonic acid.

Options

A. The concentration of `H^(+)` is double that of `CO_(3)^(2-)`
B. The concentration of `CO_(3)^(2-)` is 0.034 M
C. The concentration of `CO_(3)^(2-)` is greater than that of `HCO_(3)^(-)`
D. The concentration of `H^(+)` and `HCO_(3)^(-)` are approximately equal

Answer

D