Lecture 8 - Esterifcation - Next week Esterification Next...

Next week: Esterification
Next week: Esterification
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Next lab: Esterification (methyl benzoate)
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Before next lab period, complete:
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Esterification pre-lab quiz
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E1 post-lab quiz
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E1 post-lab report
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Esterification pre-lab report
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Tutorials
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Esterification:
Methyl Benzoate
C
O
OH
+ CH
3
OH
H
2
SO
4
C
O
OCH
3
+ H
2
O
•
___________________ : a small molecule is “condensed” in
the process of combining two
reactants to form a single product.
•
___________ : reaction does not go to completion
•
_____ Esterification – [carboxylic acid + alcohol] (cheap)
catalyst
________ + __________ _________ + _______
acid alcohol ester water
Three ways to classify:
Condensation reaction
Equilibrium
Fisher

Fisher Esterification Mechanism
Fisher Esterification Mechanism

C
O
OCH
3
C
O
OH
+ CH
3
OH
H
2
SO
4
+ H
2
O
Recover benzoic acid
at equilibrium
Isolate and purifiy
methyl benzoate
Measure Equilibrium Constant
Measure Equilibrium Constant
Part of Methyl Benzoate lab is calculation of K for this reaction.