January 10, 2025, 04:14:07 AM
Forum Rules: Read This Before Posting


« previous next »
Pages: [1]   Go Down

Topic: Benzoic Acid from Sodium Benzoate  (Read 8966 times)

0 Members and 4 Guests are viewing this topic.

Offline Random

  • New Member
  • **
  • Posts: 5
  • Mole Snacks: +0/-0
Benzoic Acid from Sodium Benzoate
« on: June 28, 2010, 05:22:07 PM »
I want to make benzoic acid from sodium benzoate. How to isolate it? Should I use HCl + Sodium Benzoate? If I need to use acids, I currently have acetic and citric acid.
Logged

Offline Jorriss

  • Chemist
  • Full Member
  • *
  • Posts: 523
  • Mole Snacks: +41/-14
Re: Benzoic Acid from Sodium Benzoate
« Reply #1 on: June 28, 2010, 08:31:44 PM »
I don't see why HCl and Sodium Benzoate wouldn't work.

It seems all you would really need is a stronger acid than benzoic acid.
Logged

Offline Random

  • New Member
  • **
  • Posts: 5
  • Mole Snacks: +0/-0
Re: Benzoic Acid from Sodium Benzoate
« Reply #2 on: June 29, 2010, 04:54:21 AM »
Is citric acid or acetic acid stronger than benzoic acid?
Logged

Offline AWK

  • Retired Staff
  • Sr. Member
  • *
  • Posts: 7976
  • Mole Snacks: +555/-93
  • Gender: Male
Re: Benzoic Acid from Sodium Benzoate
« Reply #3 on: June 29, 2010, 05:02:39 AM »
Benzoic acid is poorly soluble in cold water (a few grams per liter)
Logged
AWK

Offline Random

  • New Member
  • **
  • Posts: 5
  • Mole Snacks: +0/-0
Re: Benzoic Acid from Sodium Benzoate
« Reply #4 on: June 29, 2010, 05:42:30 AM »
Quote from: AWK on June 29, 2010, 05:02:39 AM
Benzoic acid is poorly soluble in cold water (a few grams per liter)

But can I react citric acid with sodium benzoate to make benzoic acid?
Logged

Offline Schrödinger

  • Chemist
  • Sr. Member
  • *
  • Posts: 1162
  • Mole Snacks: +138/-98
  • Gender: Male
Re: Benzoic Acid from Sodium Benzoate
« Reply #5 on: June 29, 2010, 07:45:55 AM »
Quote from: Random on June 29, 2010, 05:42:30 AM
But can I react citric acid with sodium benzoate to make benzoic acid?
Try wikipedia. pKa values for each of these compounds is given
Logged
"Destiny is not a matter of chance; but a matter of choice. It is not a thing to be waited for; it is a thing to be achieved."
- William Jennings Bryan

Offline AWK

  • Retired Staff
  • Sr. Member
  • *
  • Posts: 7976
  • Mole Snacks: +555/-93
  • Gender: Male
Re: Benzoic Acid from Sodium Benzoate
« Reply #6 on: June 29, 2010, 08:12:55 AM »
Quote from: Random on June 29, 2010, 05:42:30 AM
Quote from: AWK on June 29, 2010, 05:02:39 AM
Benzoic acid is poorly soluble in cold water (a few grams per liter)

But can I react citric acid with sodium benzoate to make benzoic acid?
Citric acid is a bit "stronger" than benzoic one but but using HCl is needed
Logged
AWK
Pages: [1]   Go Up
« previous next »
Sponsored Links