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A sample of 100 mL of 0.10 M weak acid, ...

A sample of `100 mL` of `0.10 M` weak acid, HA `(K_(a) = 1.0 xx 10^(-5))` is tirated with standard `0.10 M KOH`. What volume of `KOH` must have been addeed when the pH in the titration flask is 5

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