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  • Stuck here, help me understand: Mole fraction of the solute in a 1.00 molal aqueous solution is:

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

  • Option 1)

    0.1770

  • Option 2)

    0.0177

  • Option 3)

    0.0344

  • Option 4)

    1.7700

 

Answers (1)

best_answer

As we learned in concept

Mole Fraction -

\dpi{100} Mole\: Fraction= \frac{Moles\: o\! f\: solute}{Moles\: o\! f solute+Moles\: o\! f solvent}

-

 

 Mole fraction = \frac{moles of salute}{moles \:of \:salute + moles\:of\:solvent}

Let's assume, we have 1 mole of solute

Then, wt. of solvent = 1 kg

Moles of solvent = \frac{1000}{18}\:mol

Mole fraction of solute = \frac{1}{1+\frac{1000}{18}}

                                     = \frac{18}{1018}

                                     = 0.0177

 


Option 1)

0.1770

This option is incorrect.

Option 2)

0.0177

This option is incorrect.

Option 3)

0.0344

This option is incorrect.

Option 4)

1.7700

This option is incorrect.

Posted by

Aadil

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