« previous next »

Author Question: Calculate the mole fraction of each compound in the following mixtures. (a) 95.0 g CH3CH2OH and 5.0 ... (Read 45 times)

tichca

  • Hero Member
  • *****
  • Posts: 554
on: Aug 23, 2018

Calculate the mole fraction of each compound in the following mixtures.
  (a) 95.0 g CH3CH2OH and 5.0 g H2O
  (b) 10.0 g CH3OH, 10.0 g CH3CH2OH, and 10.0 g CH3CH2CH2OH



Question 2

A 50 aqueous solution of ethanol (50 mL total) is distilled and collected in 10-mL fractions.
  Predict the boiling range of each fraction.



Joy Chen

  • Sr. Member
  • ****
  • Posts: 354
Reply #1 on: Aug 23, 2018
Answer to Question 1

(a) moles ethanol = 95.0/46.0 = 2.07
moles water = 5.0/18.0 = 0.28
mole fraction of ethanol = 2.07/(2.07 + 0.28) = 0.88
mole fraction water = 0.12
(b) methanol: 0.449; ethanol: 0.312; propanol: 0.239



Answer to Question 2

26 mL of azeotrope would distill, followed by water. Therefore,
1: 78
2: 78
3: 78-100
4: 100
5: 100



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Did you know?

Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

A conventional zirconia oxygen sensor can only reset to exhaust mixtures that are richer or leaner ... A conventional zirconia oxygen sensor can only reset to exhaust mixtures that are richer or leaner ...
pH vs. moles base added per mole acid pH vs. moles base added per mole acid
Compound Angle Formulas Compound Angle Formulas
Calculate the magnitude and direction of the resultant for Calculate the magnitude and direction of the resultant for
A compound of iron and sulfur crystallizes in a lattice pattern described as cubic closest ... A compound of iron and sulfur crystallizes in a lattice pattern described as cubic closest ...
How to calculate the gain and loss gene numbers with low bootstrap of phylogenetic tree? How to calculate the gain and loss gene numbers with low bootstrap of phylogenetic tree?
Video: Causes of Acne

For a complete list of videos, visit our video library