« previous next »

Author Question: Calculate the mole fraction of each compound in the following mixtures. (a) 95.0 g CH3CH2OH and 5.0 ... (Read 53 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?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

Did you know?

The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

Did you know?

Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Naked Mole-Rat Naked Mole-Rat
The ABCDEs of Melanoma Changes in a Mole The ABCDEs of Melanoma Changes in a Mole
pH vs. moles base added per mole acid pH vs. moles base added per mole acid
. Calculate the net electric field at point B . Calculate the net electric field at point B
Calculate the number of grams of solute in 500.0 mL of 0.169 M KOH. Calculate the number of grams of solute in 500.0 mL of 0.169 M KOH.
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: Smoking Cessation

For a complete list of videos, visit our video library