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  • Mole fraction of the solute in a 1.00 molal aqueous solution is :Option: 1 1.7700Option: 2

Mole fraction of the solute in a 1.00 molal aqueous solution is :

Option: 1

1.7700


Option: 2

0.1770


Option: 3

0.0177


Option: 4

0.0344


Answers (1)

1.00 molal solution means 1 mole of solute in 1 kg (or 1000 g) of water.

Number of moles of solute = 1

Number of moles of solvent   = 1000/18 = 55.55

Mole Fraction of solute = 1/ (1+ 55.55) = 0.017

Therefore, the correct option is (3).

Posted by

Ramraj Saini

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