An aqueous solution of glycerol, C₃H₈O₃, in which the mole fraction of C₃H₈O₃ is 0.07070 was found to have a density of 1.0350 g mL^-1. What is the molarity of this solution?Hint: Assume one mole of glycerol and solve for moles of water. From there you can find the mass and then volume of the solution.

Question

Quizplus · Accepted Answer

To find the molarity, assume 1 mole of glycerol, which means there are 13.137 moles of water (since the mole fraction of glycerol is 0.07070). The mass of glycerol is 92.09 g/mol, and the mass of water is 236.47 g. The total mass of the solution is 328.56 g. Using the density, the volume of the solution is 317.52 mL. Molarity is moles of solute per liter of solution: 1 mole / 0.31752 L = 3.147 M.

An Aqueous Solution of Glycerol, C3H8O3, in Which the Mole

An Aqueous Solution of Glycerol, C₃H₈O₃, in Which the Mole