Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • Please help! The mole fraction of ethylene glycol (C2H6O2) in an aqueous solution containing 10% of C2H6O2 by mass

The mole fraction of ethylene glycol (C2H6O2) in an aqueous solution containing 10% of C2H6O2 by mass

  • Option 1)

    0.932

  • Option 2)

    0.322

  • Option 3)

    0.068

  • Option 4)

    0.0312

 

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}

-

 

 molar mass of  ethylene glycol (C2H6O2)=62

100g of solution containing 10g of  C2H6O2  and 90g H2O.

moles\ of\ C_2H_6O_2 = \frac{10}{62}=0.161

moles\ of\ H_{2}O=\frac{90}{18}=5

Mole fraction of  ethylene glycol =\frac{0.161}{0.16145}

= 0.0312

 


Option 1)

0.932

Option is incorrect

Option 2)

0.322

Option is incorrect

Option 3)

0.068

Option is incorrect

Option 4)

0.0312

Option is correct

Posted by

divya.saini

View full answer

Similar Questions

Latest Question