December 23, 2024, 01:32:43 PM
Forum Rules: Read This Before Posting


Topic: Distillation  (Read 5095 times)

0 Members and 1 Guest are viewing this topic.

UOIT

  • Guest
Distillation
« on: October 23, 2007, 11:27:06 PM »
Why is it not possible to obtain > 95.6 % ethanol in the distillate (i.e. when the starting sample is < 95 % ethanol)?


why is the 80 0C distillate fraction richer in ethanol than the 100 0C distillate?

Offline UnintentionalChaos

  • Full Member
  • ****
  • Posts: 102
  • Mole Snacks: +9/-2
Re: Distillation
« Reply #1 on: October 24, 2007, 12:45:55 AM »
Please read the forum rules. The wikipedia article on distillation holds your answers.

UOIT

  • Guest
Re: Distillation
« Reply #2 on: October 24, 2007, 02:22:51 AM »
Thanks Einstein!!! I did do a search and besides my question is specific

This forum is full of people like you. I posted a simple question regarding Quantum Chemistry and not one soul responded.

54 people viewed the question and not even one response.


Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27887
  • Mole Snacks: +1815/-412
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: Distillation
« Reply #3 on: October 24, 2007, 02:39:25 AM »
As UnintentionalChaos wrote - information in wikipedia article on distillation addresses exactly and specifically your question.
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline macman104

  • Retired Staff
  • Sr. Member
  • *
  • Posts: 1644
  • Mole Snacks: +168/-26
  • Gender: Male
Re: Distillation
« Reply #4 on: October 24, 2007, 04:09:49 AM »
Thanks Einstein!!! I did do a search and besides my question is specific

This forum is full of people like you. I posted a simple question regarding Quantum Chemistry and not one soul responded.

54 people viewed the question and not even one response.


In all fairness, you're question in the physical chemistry forum is not even 2 days old.  Also, just because you post a question, does not mean that you get a response.  I frequently look at many questions, on the off chance that I might be able to help, but frequently I can't.  Bumping that thread with your own post didn't help either.  Also, maybe it's not so simple, and the best solution, if you are not finding your answer here is to simply go to your professor's office hours or email, or if there is a TA?

As far as this question is concerned, I'm going to side with you a little, I checked out the article on wikipedia, and the distillation article is massive, and had I not known what I was looking for, I would have found it difficult to find my answer.

However, being disappointed to see that the wiki article had not been as clear at explaining your question as I had hoped (since it seemed from above posts that it had made it abundantly clear and easy to understand), I did do a simple search as you indicated you had done.  I googled "ethanol water distillation", and there, I found an amazingly clear website, where your answer is in fact explicitly explained.  Website.  So, I agree that the wiki article might not have helped a ton, but your argument for searching first isn't exactly convincing either. [/rant]

UOIT

  • Guest
Re: Distillation
« Reply #5 on: October 24, 2007, 01:12:03 PM »

Yea this is the sort of thing I meant when I said people here are all talk and no action.

You type this long essay, just to tell me I am right I know I am right..need not explain it.

Offline Mitch

  • General Chemist
  • Administrator
  • Sr. Member
  • *
  • Posts: 5298
  • Mole Snacks: +376/-3
  • Gender: Male
  • "I bring you peace." -Mr. Burns
    • Chemistry Blog
Re: Distillation
« Reply #6 on: October 24, 2007, 02:03:30 PM »
UOIT: Banned for 2 days for Trolling.
Most Common Suggestions I Make on the Forums.
1. Start by writing a balanced chemical equation.
2. Don't confuse thermodynamic stability with chemical reactivity.
3. Forum Supports LaTex

Sponsored Links