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Homework Help: Hess's law explanation

  1. Feb 22, 2017 #1
    1. The problem statement, all variables and given/known data
    I need to research Hess' law, but I can't find a simple explanation. I know that the enthalpy change between the reactants and products is the same as the enthalpy change between the reactants and something else, and between that something else and the products, but I don't know what this something else is.

    2. Relevant equations
    None I know

    3. The attempt at a solution
    I looked online, but it went into great detail about it.
  2. jcsd
  3. Feb 22, 2017 #2


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    Science Advisor

    ANYTHING else. Because enthalpy is a state function, the change in enthalpy depends only on the initial and final states, and not on the path taken between them. So the enthalpy change for the process A → B is the same as that for the process A → C → B, or that for A → D → E → F → B, whatever C, D etc. are.
  4. Feb 23, 2017 #3
    OK, thanks.
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