Mole fraction of solute in it's 2 molal aqueous solution is

Mole fraction of solute in it's 2 molal aqueous solution is
  1. $28.775$
  2. $0.034$
  3. $0.054$
  4. $0.018$

Solution

No. of moles of solute $=2$ Mass of solvent $=1 \mathrm{~kg}$ Since it is an aqueous solution, thus the solvent must be water. Moles of solvent $=\frac{1000}{18}=55.5$ moles Mole fraction of solute $=\frac{2}{57.5}=0.0347$

Asked in: MHT CET 2020 (13 Oct Shift 2)

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