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The ionisation constant of benzoic acid ...

The ionisation constant of benzoic acid is `6.46xx10^(-5) and K_(sp)` for silver benzoate `(C_(6)H_(5)COOAg)` is `2.5xx10^(-13)`. How many times is silver benzoate more soluble in a buffer of pH 3.19 compared to its solubility in pure water?

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