A certain buffer solution contains equal...

A certain buffer solution contains equal concentration of `A^-` and HA. `K_b` for `A^-` is `10^(-10)`. Hence-

`K_a` for HA is `10^(-5)`

`K_a` for HA is `10^(-4)`

pH of the buffer is 4

pH of the buffer is 9

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The correct Answer is:

B, C

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