Calculate the molality of a solution that is made up of 250 g of water and 20.0 g of naoh.

Answer : The molality of a solution is, 2 mole/Kg

Explanation : Given,

Mass of solute (NaOH) = 20 g

Mass of solvent (water) = 250 g

Molar mass of NaOH = 40 g/mole

Molality : It is defined as the number of moles of solute present in one kilogram of solvent.

Formula used :

Now put all the given values in this formula, we get the molality of a solution.

Therefore, the molality of a solution is, 2 mole/Kg