The mole fraction of a solute in a solution is 0 . 1 . At 298 K , the molarity of this solution is the same as its molality. The density of this solution at 298 K is 2.0 g c m – 3 . The ratio of the molecular weights of the solute and

Question

The mole fraction of a solute in a solution is 0 . 1 . At 298 K , the molarity of this solution is the same as its molality. The density of this solution at 298 K is 2.0 g c m &#8211; 3 . The ratio of the molecular weights of the solute and solvent, M W s o l u t e M W s o l v e n t , is:

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Correct answer: 0

1 mole solution has 0 . 1 mole solute and 0 . 9 mole solvent. Let M 1 = Molar mass of solute M 2 = Molar mass of solvent Molality, m = 0.1 0.9 &#160; M 2 &#215; 1000 &#8230; . . 1 Molarity, M = 0.1 0.1 &#160; M 1 + 0.9 &#160; M 2 &#215; 2 &#215; 1000 &#8230; . . 2 &#8757; m = M &#8658; 0.1 &#215; 1000 0.9 &#160; M 2 = 200 0.1 &#160; M 1 + 0.9 &#160; M 2 &#8658; M 1 M 2 = 9

The mole fraction of a solute in a solution is 0 . 1 . At 298 K , the molarity of this solution is the same as its molality. The density of this solution at 298 K is 2.0 g c m – 3 . The ratio of the molecular weights of the solute and solvent, M W s o l u t e M W s o l v e n t , is:

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More from Some Basic Concepts of Chemistry

The mole fraction of a solute in a solution is 0 . 1 . At 298 K , the molarity of this solution is the same as its molality. The density of this solution at 298 K is 2.0 g c m &#8211; 3 . The ratio of the molecular weights of the solute and solvent, M W s o l u t e M W s o l v e n t , is:

Correct answer

Step-by-step solution

More from Some Basic Concepts of Chemistry

The mole fraction of a solute in a solution is 0 . 1 . At 298 K , the molarity of this solution is the same as its molality. The density of this solution at 298 K is 2.0 g c m – 3 . The ratio of the molecular weights of the solute and solvent, M W s o l u t e M W s o l v e n t , is: