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### Topic: Enthalpy Question Help  (Read 1790 times)

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#### zombielord

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##### Enthalpy Question Help
« on: March 12, 2010, 02:03:24 PM »
I would appretiate some help on this question such as which equasion to use

Calculate the reaction enthalpy for the process:
Code: [Select]
½ N2 + 3/2H2 = NH3at a temperature of 700 K, given the following information:
(i) for NH3 (g), (delta H of formation) (298.15 K) = -46.11 kJ mol-1

Thank you for your time

#### Black Mage

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##### Re: Enthalpy Question Help
« Reply #1 on: March 12, 2010, 07:17:07 PM »
I think you might be looking for this formula.

ΔHreactionO = ΣΔHfO (Products) - ΣΔHfO (Reactants)
"Let the future tell the truth and evaluate each one according to his work and accomplishments. The present is theirs; the future, for which I really worked, is mine." - Nikola Tesla