If I have a mixture of benzoic acid and benzil, and. .

  • Thread starter Thread starter mirandasatterley
  • Start date Start date
  • Tags Tags
    Acid Mixture
Click For Summary
SUMMARY

This discussion centers on the extraction of benzoic acid and benzil using dichloromethane and sodium hydroxide. When sodium hydroxide is added to benzoic acid, it forms sodium benzoate, while benzil, being nonpolar, does not react with dichloromethane but dissolves in it. The extraction process allows for the separation of benzoic acid into the aqueous layer, leaving benzil in the organic layer without any chemical reaction occurring between benzil and dichloromethane.

PREREQUISITES
  • Understanding of organic chemistry concepts, specifically acid-base reactions.
  • Familiarity with extraction techniques in organic chemistry.
  • Knowledge of the properties of organic solvents, particularly dichloromethane.
  • Basic grasp of solubility principles related to polar and nonpolar compounds.
NEXT STEPS
  • Research the mechanism of acid-base reactions involving benzoic acid and sodium hydroxide.
  • Study the principles of liquid-liquid extraction and its applications in organic chemistry.
  • Learn about the solubility characteristics of various organic compounds in different solvents.
  • Explore the properties and uses of dichloromethane in organic synthesis and extraction processes.
USEFUL FOR

Chemistry students, organic chemists, and laboratory technicians involved in extraction techniques and organic compound analysis.

mirandasatterley
Messages
61
Reaction score
0
If I have a mixture of benzoic acid and benzil, and I add dichloromethane to it and extract it using sodium hydroxide, the benzoic acid reacts with the sodium hydroxide to form sodium benzoate, but what does the benzil react with. I know that its in the organic layer because it's neutral but does it react with the dichloromethane? and is there a mechanism for it?
Any help is appreciated.
 
Chemistry news on Phys.org
1) We say that benzil is nonpolar, not "neutral"
(Well, depending on how you define "neutral"; benzil is electrically neutral, but then so is benzoic acid, the other compound)

2) Adding aqueous NaOH to benzoic acid forms water, not sodium benzoate precipitate

3) Benzil need not chemically react with dichloromethane to dissolve in it.
Hence you can extract it after the benzoic acid dissociates into the basic aqueous layer
 
Last edited:

Similar threads

  • · Replies 18 ·
Replies
18
Views
5K
  • · Replies 1 ·
Replies
1
Views
10K
  • · Replies 11 ·
Replies
11
Views
3K
  • · Replies 3 ·
Replies
3
Views
5K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 6 ·
Replies
6
Views
880
  • · Replies 1 ·
Replies
1
Views
4K
  • · Replies 1 ·
Replies
1
Views
2K
Replies
43
Views
19K
Replies
4
Views
5K