What is the percent-by-mass concentration of citric acid, C₆H₈O₇, in an aqueous solution that contains 263.2 g of citric acid in 1.00 L of solution? The density of the solution is 1.10 g/mL. A)73.7% B)26.3% C)23.9% D)3.80% E)29.0%

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Quizplus · Accepted Answer

To find the percent-by-mass concentration, first calculate the mass of the solution: 1.00 L = 1000 mL, and with a density of 1.10 g/mL, the mass is 1100 g. The percent-by-mass is (mass of solute/mass of solution) x 100 = (263.2 g / 1100 g) x 100 = 23.9%.

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What Is the Percent-By-Mass Concentration of Citric Acid, C₆H₈O₇, in an Aqueous