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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).
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