Question

If the density of 3M NaOH solution is 2g/cm^3 then the molality of the solution will be

Answer 1

Answer:

Density=Molarity (1/molarity + molecular wt/1000)

2=3(1/m+40/1000)

2=3(1/m+1/25)

2=3/m+3/25)

2=75+3m/25m. [LCM]

50m=75+3m

47m=75

m=75/47=1.59=1.6