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Enthalpy of polymerization

  1. Oct 16, 2012 #1


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    Gold Member

    1. The problem statement, all variables and given/known data
    The polymerization of ethylene to linear polyethylene is represented by the following reaction
    [itex]nCH_{2}=CH_{2} \rightarrow (-CH_{2}-CH_{2}-)_{n}[/itex]
    where n=large integer value
    Calculate the enthalpy of polymerization per mol of ethylene at 298K if average bond enthalpies of bond dissociation for C=C and C-C are 590 and 331kJ/mol respectively

    2. Relevant equations

    3. The attempt at a solution

    For one mole
    [itex]ΔH_{poly} = BDE of C=C+4\times BDE C-H - BDE of C-C - 4\times BDE C-H[/itex]

    But this is not correct.
  2. jcsd
  3. Oct 17, 2012 #2


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    Staff: Mentor

    Please elaborate on the meaning of your symbols.
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