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thermite reaction enthalpy

rthmjohn
in Inorganic Chemistry

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I need a step-by-step guide for calculating the reaction enthalpy of thermite at 2000 degrees celsius. Can somebody help?

I imagine the people smarter than me will want to know what sort of thermite.

Calculate the energy needed to break the bonds in the reactant molecules, then claculate the energy released in the making of new bonds in the produced molecule, Al2O3, then find the sum of the energy needed to break the bonds and the energy needed to make then new bonds. And also, multiply each bonds strength/energy by the numebr of moles of it that is in the reaction.

 

[edit]- the alumina part is if ur doing the traditional rust and AL.

  • 4 months later...
  • Author

its -852 kJ/mol for ferroaluminum, but what i don't get is how its so powerful if acetylene's is -2599.2 kj/mol. Can someone explain why thermite is so imensely powerful? Is the copper oxide/aluminum thermite as exothermic as acetylene?

  • 2 weeks later...
  • Author

Does reaction enthalpy have anything to do with how hot a substance gets? Does thermite burn hotter than acetylene?

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