Molality measures concentration by comparing moles of solute to the mass of solvent (not the total solution volume), which makes it unaffected by temperature changes — useful for freezing point and boiling point calculations..
Molality measures concentration by comparing moles of solute to the mass of solvent (not the total solution volume), which makes it unaffected by temperature changes — useful for freezing point and boiling point calculations.
Dissolving 3 mol of solute in 1.5 kg of water. Molality = 3 / 1.5 = 2 mol/kg.
A concentration measure expressed as moles of solute per kilogram of solvent.
Molality (m) = moles of solute ÷ kilograms of solvent.
Molality uses solvent mass (temperature-independent); molarity uses solution volume.