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Ester linkage and alkene cracking

  1. May 8, 2012 #1
    in an ester is the ester link/bond the -COO-? meaning does it include the C=O in the ester linkage. i would think so as something else would mean the functional group is different. However, i am not entirely sure as my textbook just brakets the C-O as the ester bond.

    Also, can alkenes such as decene be cracked or only alkanes can be cracked?

    Thanks for all the help! :smile:
     
  2. jcsd
  3. May 8, 2012 #2

    chemisttree

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    There are several bonds in an ester. There is a bond between the carbonyl carbon and the adjacent carbon (R-COO), there is a double bond between the carbonyl carbon and the carbonyl oxygen (R-C=O), there is a bond between the carbonyl carbon and the adjacent oxygen (R-(C=O)-O) and there is a single bond between the adjacent singly-bonded oxygen and another carbon (R-(C=O)-O-R').
    That which is cracked is usually a heavy oil or thick, viscous residue or even a coal. So the answer is neither alkenes such as decene or alkanes are cracked. Those compounds are the products of cracking.
     
  4. May 9, 2012 #3
    Oh then if there is an alkene in the coal which is a long chain one will it be cracked? Thanks for the help!
     
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