Solved: The active compound in Pepto-Bismol contains C, H, O, and Bi. (a) When 0.22105 g

Chapter 4, Problem 4.136

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The active compound in Pepto-Bismol contains C, H, O, and Bi. (a) When 0.22105 g of it was burned in excess O2, 0.1422 g of bismuth(III) oxide, 0.1880 g of carbon dioxide, and 0.02750 g of water were formed. What is the empirical formula of this compound? (b) Given a molar mass of 1086 g/mol, determine the molecular formula. (c) Complete and balance the acid-base reaction between bismuth( III) hydroxide and salicylic acid (HC7H5O3), which is used to form this compound. (d) A dose of Pepto-Bismol contains 0.600 mg of the active ingredient. If the yield of the reaction in part (c) is 88.0%, what mass (in mg) of bismuth(III) hydroxide is required to prepare one dose?

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