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    For hess's cycle in the question if it says to calculate enthalpy of combustion but gives us formation values do we construct a combustion cycle? e.g.


    As in another question it says to calculate formation and we're given combustion values but we have to construct a combustion cycle. e.g.


    thanks!
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    (Original post by Secret.)
    For hess's cycle in the question if it says to calculate enthalpy of combustion but gives us formation values do we construct a combustion cycle? e.g.


    As in another question it says to calculate formation and we're given combustion values but we have to construct a combustion cycle. e.g.


    thanks!
    Maybe if you read through this interactive on Hess law you will see how to tackle these questions.

    Here's a video explanation of the same interactive.

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    (Original post by charco)
    Maybe if you read through this interactive on Hess law you will see how to tackle these questions.

    Here's a video explanation of the same interactive.

    Hi! Thanks very much I'll definitely book mark that to refer back to it
 
 
 
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