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CGP EDU Academic Team
Published on: August 14, 2026
The mole fraction of a solute in a solution is 0.1. At 298 K, molarity of this solution is the same as its molality. Density of this solution at 298 K is 2.0 g cm -3 . The ratio of the molecular weights of the solute and solvent, 
, is
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(9)
…(i)
W solute + W solvent = W soiution = density x volume
W solute + W solvent = 2 x V ...(ii)
Molarity = molality
W solute = W solvent ...(iii)
Using equation (i) and (iii), we get
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