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    Calculating Delta E formation

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    What is Delta E for the formation of 8 mole of CO at 1 atm and 25°C?
    C(graphite) + 1/2 O2(g)--> CO(g) ΔH = -110.5 kJ/mol
    I am confused I tried -1552 and -112... I think i am close but seem to be off somewhere.

    © BrainMass Inc. brainmass.com October 3, 2022, 11:14 pm ad1c9bdddf
    https://brainmass.com/chemistry/energetics-and-thermodynamics/calculating-delta-formation-307304

    SOLUTION This solution is FREE courtesy of BrainMass!

    The given reaction is
    8C(graphite) + 4O2 ---> 8 CO(g)

    For this reaction ΔH = -110.5 kJ/mol
    Since, E= q + w (Under constant pressure conditions) E=H-PΔV

    And under constant volume conditions:
    E=H-ΔnRT
    E= -110.5kJ- 1/1000[(4mol)(8.314 J/kmol)(298k)]
    E= -120.4 kJ

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    © BrainMass Inc. brainmass.com October 3, 2022, 11:14 pm ad1c9bdddf>
    https://brainmass.com/chemistry/energetics-and-thermodynamics/calculating-delta-formation-307304

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