The mole fraction of a solute in one molal ethanolic solution would be

Step-by-step solution

1 molal solution means 1 mol of solute in 1000 g or 1 kg of ethanol. Molecular weight of ethanol = 46.07 g/mol Number of moles of ethanol aligned & = Weight of ethanol Molecular weight of ethanol & = 1000 ~g 46.07 ~g / mol & =21.70 ~mol & Mole fraction of solute = 1 ~mol 1 ~mol +21.70 ~mol & = 1 ~mol 22.70 ~mol & =0.044 aligned Hence, mole fraction of solute is 0.044.