Question

mole fraction of a solute in aq. solution is 0.2.then the molality of solution is​

Answer 1

This means 2 moles of solute in 10 moles of solution

So number of moles of water = 10–2=8

So weight of water = 8*18=144

So hence we have

n=2 , w=144

So molality m=n*1000 / (wt)in grams

= 2000/144= 13.8888888889