A painful arthritic condition known as gout is caused by an excess of uric acid, HUric, in the blood. An aqueous solution contains 4.00 g of uric acid. A 0.730 M solution of KOH is used for titration. After 12.00 mL of KOH are added, the resulting solution has pH 4.12. The equivalence point is reached after a total of 32.62 mL of KOH are added.
(a) What is the molar mass of uric acid?
(b) What is its Ka?
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