Converting molarity to mole fraction, mass percent and molality: A `0.750 M` solution of `H_(2)SO_(4
Channel: Doubtnut
Date: 16/08/2020

Converting molarity to mole fraction, mass percent and molality: A `0.750 M` solution of `H_(2)SO_(4)` in water has a density of `1.049 g mL^(-1)` at `20 ^(@)C`. What is the concentration of this solution in (a) mole fraction, (b) mass percent. And (c ) molality?Strategy: To solve this problem, we need to know the mass of solute as well as mass of solvent. There is `0.750 mol H_(2)SO_(4)` per liter of solution. Let's pick an arbitrary amount of the solution that will make the calculations easy, say `1.00 L`. Consider `1 L (=1000 ml)` of solution and calculate its mass, using the density. We can then calculate the mass of `H_(2)SO_(4)` and find the mass of `H_(2)O` by difference. Now we can calculate the mole fraction, mass precent and morality.