Question

What is the mole fraction of a solute in a 2.2 molal solution in which naphthalene (C10H8) is the solvent?

Answer 1

The mole fraction of the 2.2 molal solution whose solvent is naphthalene is 0.28.

Using the relation;

molality = mole fraction × 1000/MA

Where MA = molar mass of the solvent

We know from the question that the molaity of the solution is 2.2 molal

Making the mole fraction the subject of the formula;

mole fraction = molality × MA/1000

MA = 128 g/mol

mole fraction = 2.2 × 128/1000

Mole fraction = 0.28

Learn more: brainly.com/question/2510654