At a given temperature, the first and the second ionisation constants of the acid, `H_2A` are `1.0xx10^(-5)` and `5.0xx10^(-10)` respectively. Which of the following comments are true regarding this acid-

Options

A. The concentration of `A^(2-)` ions in 0.01(M) aqueous solution of `H_2A` is 0.01(M)
B. the overall ionisation constant for `H_2A` is `5.0xx10^(-15)`
C. in 0.01(M) aqueous solution of `H_2A`, the molar concentration of `H_3O^+` ions is twicet that `A^(2-)` ions.
D. in 0.01(M) aqueous solution of `H_2A,[H_3O^+]~~[Ha^-]`

Answer

B, D