Q 1129634511.     A weak base `BOH` is titrated with a strong acid `HA`. When `10` ml of `HA` is added, the pH is found to be `9.00` and when `25` ml is added, `pH` is `8.00.` Calculate the volume of the acid required to reach the equivalence point.

A

`45` ml

B

`36` ml

C

`30` ml

D

`54` ml

HINT

Use formula: `pH = 14 - pK_b - log([[B^+]]/[[BOH]])`

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