Ester formation & amount of acid catalyst needed

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SUMMARY

The discussion focuses on the optimal amount of sulfuric acid (H2SO4) catalyst required for Fischer esterification reactions. Participants confirm that typically, only a few drops of H2SO4 are necessary, often around 0.002 equivalents relative to the carboxylic acid used. The consensus is that while the concentration of the acid catalyst is not critical, excessive amounts should be avoided, especially when dealing with sensitive alcohols or acids. The discussion emphasizes the importance of understanding the stoichiometry involved in the ester formation process.

PREREQUISITES
  • Understanding of Fischer esterification
  • Knowledge of carboxylic acids and alcohols
  • Familiarity with stoichiometry in chemical reactions
  • Basic concepts of acid catalysis
NEXT STEPS
  • Research the stoichiometric ratios in Fischer esterification reactions
  • Learn about the role of sulfuric acid as a catalyst in organic synthesis
  • Explore the effects of varying catalyst concentrations on ester yields
  • Investigate the sensitivity of different alcohols and acids in esterification reactions
USEFUL FOR

Chemistry students, organic chemists, and laboratory technicians involved in ester synthesis and reaction optimization.

smack_whore
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Hi I've been reading a lot about esters and have the general idea but I am not sure about exact amounts of acid catalyst needed.
say the following experiment was tro be carried out to form an ester
R-C=O(O-R2)
*X moles of R-C=O(OH)
*10X moles of R2-C-OH
*How much H2SO4 would be needed?
i read a few drops are needed, but a few drops per what?per mole of carboxylic acid?alcohol?
any answers comments appreciated, thanks :!)
 
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I'm pretty sure it's carboxylic acid
 
Whenever I have done a Fisher esterification the amount of acid called for has been exceptionally small (e.g. 0.002 equivalents relative to acid) so I don't think that the concentration is very important. That said, additional acid probably won't cause problems unless your alcohol or acid/ester and especially acid sensitive.
 
thanks

thanks a lot for the links tutor n for the advice movies, both very helpfull.i think i have everything i need now :smile:
 

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