anonymous
  • anonymous
For a particular isomer of C8H18, the following reaction produces 5093.7 KJ of heat per mole of C8H18(g) consumed, under standered conditions. What is the standard enthalpy of formation of this isomer of C8H18(g)?
Thermodynamics
schrodinger
  • schrodinger
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anonymous
  • anonymous
Sapling?? ... LoL, Okay. Take 5093.7 KJ = [Delta Hformation of Co2(g) x's however many moles the problem gave you of Co2 + Delta H formation of H2O(g)] - [Delta Hformation of C8H18(g) +Delta Hformation of O2(g)] Then you just work out the math and manipulate Delta Hformation of C8H18 to one side by itself.
anonymous
  • anonymous
I actually think it should be -5093. lol ... sorry. but still work it the same way :)
anonymous
  • anonymous
what is the heat of formation for octane (liquid)?

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