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Mole Fraction

Q. A solution is prepared by dissolving 76.3 g NaI in 545 g of water. Determine the mole fraction of NaI if the final volume of the solution is 576 mL. A) 1.32 × 10^-2 B) 6.04 × 10^-3 C) 1.66 × 10^-2 D) 1.40 × 10^-3 E) 8.84 × 10^-2

Solved • Jul 15, 2019

Mole Fraction

Q. A solution is prepared by dissolving 17.75 g sulfuric acid, H2SO4, in enough water to make 100.0 mL of solution. If the density of the solution is 1.1094 g/mL, what is the mole fraction H2SO4 in the solution? A) 0.0350 B) 19.0 C) 0.0338 D) 0.0181

Solved • Jul 15, 2019

Mole Fraction

Q. A 2.72 m (molal) solution of propanol (C3H7OH) was prepared by dissolving a known amount of the substance in 200.0 g of octane (C8H18). What was the mass of propanol added. What is the mole fraction of octane

Solved • Jun 25, 2019

Mole Fraction

Q. In a solution of dichloromethane CH2Cl2 in 2-hexanone (CH3COC4H9) the mole fraction of dichloromethane is 0.360. If the solution contains only these two components what is that molality of dichloromethane in this solution?

Solved • Jun 25, 2019

Mole Fraction

Q. What are the mole fractions of H3PO4 and water in a solution of 12.3 g of H3PO4 in 123 g of water

Solved • Jun 25, 2019

Mole Fraction

Q. An aqueous solution is 27.0% lithium chloride, LiCl, by mass. The density of the solution is 1.127 g/mL. What are the molality, mole fraction and molarity of LiCl in the solution?

Solved • Jun 3, 2019

Mole Fraction

Q. A solution is prepared by dissolving 20.2 mL of methanol (CH3OH) in 100.0 mL of water at 25 ∘C. The final volume of the solution is 118 mL. The densities of methanol and water at this temperature are 0.782 g/mL and 1.00 g/mL, respectively. Find M, mass %, m, mole fraction.

Solved • Jun 2, 2019