Question

mole fraction of solute in a 1.00 molal aqueous solution is?

(a) 0.0177

(b) 0.0344

(c) 1.7700

(d) 0.1770

plzzzzzzzzzzz answer fast and appropraitely

Answer 1

1.00 molal aqueous solution means that 1 mol of solute is dissolved in 1 Kg of water.Hence,No. Of moles of solute = 1No. Of moles of water = 1000/18=55.556MOLE FRACTION OF SOLUTE = No. Of moles of solute/no. Of moles of solute + No. Of moles of solventMOLE FRACTION = 1/1+55.556 =0.1768[0.0177(approx.) :):)