Answer: Molality = 2 mol/Kg or 2m
Molality is a property of a solution and is defined as the number of moles of solute per kilogram of solvent. The SI unit for molality is mol/kg or 'm'.
[tex]Molality(m)=\frac{(Moles of solute)}{(Mass of solvent in Kg)}[/tex]
In our question , Solute is NaOH and solvent is water.
Moles of solute NaOH = 6 mol
Mass of solvent water = 3 kg
[tex]Molality(m)=\frac{(6 mol)}{(3 Kg)}[/tex]
[tex]Molality(m)=\frac{2mol}{kg}[/tex]
Molality = 2m
