Question

How do you find the mass percent, mole fraction, and the molality for these two problems?

P1. (Sec. 11.1) A solution is prepared by dissolving 113 grams of acetone (C3H6O) in 662 grams of water. With this information, calculate the solution's mass percent % of the solute, mole fraction of the solute, and the solutions molality. a) b) c) d) e) Mass Percent: 88.7%; Mole Fraction (Solute): 0.9068; & Molality: 5.70 mol/kg Mass Percent: 11.3%; Mole Fraction (Solute): 0.0932; & Molality: 5.70 mol kg Mass Percent: 85.4%; Mole Fraction (Solute): 0.9496; & Molality: 2.94 mol/kg Mass Percent: 14.6%; Mole Fraction (Solute): 0.0504; & Molality, 2.94 mol/kg Mass Percent: 22.1%; Mole Fraction (Solute): 0.0831 ; & Molality: 3.11 mol/kg P2. (Sec. 11.1) A solution is prepared by dissolving 78.6 grams of oxalic acid (H2C204) in 821 grams ofwater. With this information, calculate the solution's mass percent %ofthe solute, mole fraction of the solvent, and the solutions molality a) Mass Percent: 91.3%; Mole Fraction (Solvent): 0.0189; & Molality: 1.06 mol kg b) Mass Percent: 8.74%; Mole Fraction (Solvent): 0.9812; & Molality: 1.06 mol kg c) Mass Percent: 14.8%; Mole Fraction (Solvent): 0.0532; & Molality: 2.62 mol kg d) Mass Percent: 90.0%; Mole Fraction (Solvent): 09158; & Molality: 2.62 mol/kg e) Mass Percent: 10.7%; Mole Fraction (Solvent): 0.0786 & Molality: 3.86 mol kg

Answer 1