What is the mole fraction of glycerol for a mixture prepared by mixing 300 grams of glycerol (non-volatile solute) and 505 grams of H₂O?
Molar Mass(glycerol) = 92.09 g/mol and Molar Mass(H₂O) = 18.02 g/mol

Question

Quizplus · Accepted Answer

First, we need to calculate the number of moles of each substance: n(glycerol) = 300 g / 92.09 g/mol = 3.2575 mol n(H₂O) = 505 g / 18.02 g/mol = 28.0078 mol Then we can calculate the total number of moles in the mixture: n(total) = n(glycerol) + n(H₂O) = 31.2653 mol Finally, we can calculate the mole fraction of glycerol: c _glycerol = n(glycerol) / n(total) = 3.2575 mol / 31.2653 mol = 0.104 Therefore, the correct answer is A.

What Is the Mole Fraction of Glycerol for a Mixture