November 29, 2021, 04:38:21 AM
Forum Rules: Read This Before Posting


Topic: Trace Acid  (Read 17618 times)

0 Members and 1 Guest are viewing this topic.

Offline Aznhmonglor

  • Regular Member
  • ***
  • Posts: 82
  • Mole Snacks: +0/-0
Trace Acid
« on: March 08, 2009, 09:29:36 PM »
Can anyone explain to me what is a trace acid or take a look at this problem? Not sure what it wants.


Offline nj_bartel

  • Sr. Member
  • *****
  • Posts: 1487
  • Mole Snacks: +76/-42
Re: Trace Acid
« Reply #1 on: March 08, 2009, 09:34:15 PM »
I'd assume it just means very dilute.

Offline Aznhmonglor

  • Regular Member
  • ***
  • Posts: 82
  • Mole Snacks: +0/-0
Re: Trace Acid
« Reply #2 on: March 08, 2009, 09:36:18 PM »
Protonate the double bond Oxygen then?

Offline alexofordummies

  • New Member
  • **
  • Posts: 6
  • Mole Snacks: +0/-0
Re: Trace Acid
« Reply #3 on: March 08, 2009, 09:44:40 PM »
That's what I'd do, but the major product may just end up being your reactant anyway?

Offline Aznhmonglor

  • Regular Member
  • ***
  • Posts: 82
  • Mole Snacks: +0/-0
Re: Trace Acid
« Reply #4 on: March 08, 2009, 09:52:07 PM »
This question is confusing.

Offline nj_bartel

  • Sr. Member
  • *****
  • Posts: 1487
  • Mole Snacks: +76/-42
Re: Trace Acid
« Reply #5 on: March 08, 2009, 11:08:20 PM »
Any nucleophilic sites you see that could attack a protonated carbonyl?

Offline James Newby

  • Regular Member
  • ***
  • Posts: 86
  • Mole Snacks: +13/-3
  • Gender: Male
Re: Trace Acid
« Reply #6 on: March 09, 2009, 04:11:25 AM »
Trace is just a different word for catalytic amount
4th year undergraduate at the University of Sheffield

Offline cundi

  • Regular Member
  • ***
  • Posts: 69
  • Mole Snacks: +11/-3
  • Gender: Male
Re: Trace Acid
« Reply #7 on: March 09, 2009, 09:31:17 AM »
Trace means very small amount, which can not be determined exactly.

Offline Aznhmonglor

  • Regular Member
  • ***
  • Posts: 82
  • Mole Snacks: +0/-0
Re: Trace Acid
« Reply #8 on: March 09, 2009, 11:28:21 AM »
What would small amounts of acid do to my reactant?

Offline Aznhmonglor

  • Regular Member
  • ***
  • Posts: 82
  • Mole Snacks: +0/-0
Re: Trace Acid
« Reply #9 on: March 09, 2009, 06:41:16 PM »
Can anybody help? I tried this and still couldn't get it right, I thought the OH would form a bond with the Carbonyl group to form a ring but was wrong.


Offline nj_bartel

  • Sr. Member
  • *****
  • Posts: 1487
  • Mole Snacks: +76/-42
Re: Trace Acid
« Reply #10 on: March 09, 2009, 06:47:30 PM »
You're right, but something has to happen to the carbonyl - you aren't displacing a proton/hydrogen.

Offline Aznhmonglor

  • Regular Member
  • ***
  • Posts: 82
  • Mole Snacks: +0/-0
Re: Trace Acid
« Reply #11 on: March 09, 2009, 06:50:00 PM »
would the carbonyl group turn into an alcohol? double bond O turns into OH?

Something like this?

« Last Edit: March 09, 2009, 07:02:31 PM by Aznhmonglor »

Offline Aznhmonglor

  • Regular Member
  • ***
  • Posts: 82
  • Mole Snacks: +0/-0
Re: Trace Acid
« Reply #12 on: March 09, 2009, 08:39:04 PM »
Can anybody still help me on this? Its bothering me so bad. I know what trace acid is now. It works the same way as any acid would but with this reactant, I dont know where to start. Maybe the double bond O is protonated to form this:



After that can the two OH groups come together to form a cyclic compound?

Offline Aznhmonglor

  • Regular Member
  • ***
  • Posts: 82
  • Mole Snacks: +0/-0
Re: Trace Acid
« Reply #13 on: March 09, 2009, 08:53:41 PM »
Okay that didnt work out. This was incorrect.



Any ideas?

Offline nj_bartel

  • Sr. Member
  • *****
  • Posts: 1487
  • Mole Snacks: +76/-42
Re: Trace Acid
« Reply #14 on: March 09, 2009, 11:26:16 PM »
would the carbonyl group turn into an alcohol? double bond O turns into OH?

Something like this?



That would be my answer.  Do you know why?

Sponsored Links