Which of the following aqueous solutions has the largest molality of benzoic acid (C₆H₅COOH) A) 3.5 m C₆H₅COOH B) mole fraction, X = 0.050 C₆H₅COOH C) 2.50 mass % C₆H₅COOH D) 3.2 g C₆H₅COOH in 650. g of H₂O E) 1.5 moles C₆H₅COOH in 65.0 moles of H₂O

Question

Quizplus · Accepted Answer

Molality is defined as the number of moles of solute per kilogram of solvent. In this case, the solute is benzoic acid and the solvent is water. A) 3.5 m C₆H₅COOH has the largest molality because it has the highest number of moles of benzoic acid per kilogram of water. B) Mole fraction does not provide information on molality. C) Mass percent also does not give information on molality. D) The gram amount is not given for water, making it impossible to calculate molality. E) The mole amounts given do not provide information on the masses of the solute and solvent needed to calculate molality.

Which of the Following Aqueous Solutions Has the Largest Molality