Problem I:
Calculate the molality and mol fraction
of HCl for a solution which has a mass percent of 37.1 %.
Summary:
Step 1: Assume amounts of solute and solvent in terms of the
concentration definition the solution is defined.
For example if the concentration of the solution is given in
weight %, assume 100 grams of solution than determine the mass of solute and
solvent.
Step 2: Convert the grams of solute to mols, convert the grams
of solvent to kilograms, then calculate the molality of the solution.
Step 3: Convert the grams of solvent to mols, use mols of solute
from Step 2, then calculate the mol fraction of the solution.