Enthalpy of formation: is it for gaseous compounds?

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  1. ilovemath's Avatar
    1 12-06-2012  11:24
    • Benevolent Member
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    Enthalpy of formation: is it for gaseous compounds?
    When calculating enthalpy formation (using a Hess cycle involving: enthalpy atomisation, average bond enthalpy) does it only apply to the formation of gaseous compounds?
  2. lamalas600's Avatar
    2 12-06-2012  11:34
    • Respected Member
    • Posts: 203
    Re: Enthalpy of formation: is it for gaseous compounds?
    Formation of 1 mol of any compound.
  3. JMaydom's Avatar
    3 12-06-2012  14:04
    • Benevolent Member
    • Posts: 843
    Re: Enthalpy of formation: is it for gaseous compounds?
    Standard state of the reagents. i.e. water is liquid. If it specifically states that the water is a gas, you need to include an enthalpy of vaporisation term.
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