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)
A Aadil Khan

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.

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