(Sections 16.3 and 16.4) Barium sulfate is swallowed to enhance X-ray studies of the gastrointestinal tract
(a) Calculate the solubility of Ba2+ in mol/L in pure water Ksp of BaSO4 = 1.1 × 10–10.
(b) In the stomach, the HCl concentration is 0.10 M Calculate the solubility of Ba2+ in mol/L in this solution. Ka of HSO4– = 1.2 × 10–2.
(c) The two calculations in parts (a) and (b) were done using data at 25 °C. Repeat part (b) at 37 °C, body temperature At that temperature, Ksp of BaSO4 = 1.5 × 10–10; Ka of HSO4– = 7.1 × 10–3.
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