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Posted by on Monday, July 18, 2011 at 8:19pm.

Calculate the heat of formationof benzene if the heat of combustion of benzene is 3260 kj/mol, given the following enthalpies of formation of the product.

enthalpies of formation for O2= 0k (element)

enthalpies of formation CO2 = -394kj/mol

enthalpies of formation H2O= -285 kJ/mol

  • chemistry - , Monday, July 18, 2011 at 9:45pm

    Write the equation and balance it.
    2C6H6 + 15O2 ==> 12CO2 + 6H2O
    DHrxn = (n*DHfproducts) - (n*DHfreactants)
    Divide by 2 to find the DHf for one mole.

  • chemistry - , Tuesday, July 31, 2012 at 8:01pm


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