Question

If the mole fraction of solute is 0.5 and molar mass
of solvent is 50 then molality of solution will be
a) 20 m
b) 0.20 m
c) 2 m
d) 0.02 m​

Answer 1

Answer:

molality = 20

Explanation:

mole fraction of solute = m/m+(1000/molarmass)

0.5 = m/m+(1000/50)

0.5(m+20)=m

0.5m+ 10=m

10=m-0.5m

10=0.5m

10/0.5=m

20=m

molality of solution=20 m