Number of carboxylic acids and esters isomers for C4H8O2

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TT0
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Homework Statement



What is the total number of isomeric carboxylic acids and esters having the molecular formula C4H8O2?

A.6

B.5

C.4

D.3

E.2

Homework Equations




The Attempt at a Solution


My answer was 4. The isomers I got was:

-2-methyl propanoic acid
-butanoic acid
-methyl propanoate
-ethyl ethanoate

Did I miss any?

Cheers!
 

Answers and Replies

  • #2
Ygggdrasil
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What about esters based on formic acid?
 
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I see, I missed propyl methanoate. Cheers!
 
  • #4
Ygggdrasil
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There are two isomers based on formic acid.
 
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I see, I forgot isopropyl acetate. So the answer is A. Cheers!
 

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