Hess Law

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5 Terms

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Hess Law definition

If a reaction can take place by more than one route, then the enthalpy change is the same for both routes.

2
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Enthalpy of combustion

measures energy released during complete combustion of a substance

3
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Enthalpy change of combustion calculations

  • Arrows pointing down

  • B= A + C

4
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Enthalpy of formation defintion

measures energy involved in formation of compounds from elements

5
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Enthalpy of formation calculations

  • Arrows pointing up

  • C=A+B