Question

The density of 2.0 M solution of a solute is 1.2 g/ml.If the molecular mass of the solute is 100g/ml,thenthe molality of the solution is

Answer 1

Answer:

Yes! Here is your answer!

Explanation:

2 M solution has 2 moles of solute dissolved in one litre (1000 mL) of the solution

Mass of the solution =V×d=1000mL×1.2g mL−1=1200g

Mass of solvent =(1200−200)g=1000g=1kg

Molality of solution (m) =No. of moles of soluteMass of solvent in Kg

2 mol1 kg=2mol Kg−1=2m.