Density of 2 m aqueous solution of naoh is 1.28 g/cm3. The molality of the solution is [given that molecular mass of naoh = 40 g molâ1]

Density of 2 m aqueous solution of naoh is 1.28 g/cm3. The molality of

1.	Density of 2 m aqueous solution of naoh is 1.28 g/cm3. The molality of the solution is [given that molecular mass of naoh = 40 g molâ1]
Answer» tion:As we know the FAMOUS RELATION between MOLARITY and molality we could solve it very quickly.Let's seem= 1000M /1000d-MM2Wherem---> MolalityM----> Molarityd----> density of solution in g/mlM2---> Molar mass of SOLUTE (here is 23+16+1=40)So m= 1000 * 2/10001.28 - 240=2000/1200= 5/3=1.66667m