What are the mole fractions of the solute and solvent in this solution?
-
a 0.150 molal NaCl solution has 0.150 moles of the salt in 1 kg of water
so we have 0.150 moles of solute in 1000 / 18 moles of water or 55.55 moles
total number of moles in the solution = 55.70
mole fraction of solute = 0.150 / 55.70 = .0027
MF of solvent = .9973
so we have 0.150 moles of solute in 1000 / 18 moles of water or 55.55 moles
total number of moles in the solution = 55.70
mole fraction of solute = 0.150 / 55.70 = .0027
MF of solvent = .9973
-
You cannot answer the question unless you know what the solvent is.