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Homework Help: What is the enthalpy of combustion of magnesium?

  1. Jan 3, 2008 #1
    [SOLVED] What is the enthalpy of combustion of magnesium?

    1. The problem statement, all variables and given/known data
    Determine the enthalpy of combustion of Magnesium.

    Mg + 1/2O2 --> MgO

    magnesium + half oxygen -> magnesium oxide.

    3. The attempt at a solution

    I am not sure how to calculate this since I don't know where to start. Is there a specific value for this? Or, is there a way we could get these values from a chart or somewhere?

    I need help. Thanks.
  2. jcsd
  3. Jan 4, 2008 #2


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    Gold Member

    Review the definition of heat of formation and then reexamine your combustion equation.
  4. Jan 4, 2008 #3
    They should be at the back of your book or try the Index if all fails.
  5. Jan 4, 2008 #4
    Thanks very much guys for your responses. I found it on the net and basically I had to look for enthalpy of formation of MgO to get my answer. It's -601 kJ.
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