Chapter 9.4 Hess' law and enthalpy cycles
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4 Terms
1
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What is Hess’ law?
If a reaction can take place by two routes, and the starting and finishing conditions are the same, the total enthalpy change is the same for each route.
2
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Why is it impossible to measure enthalpy change of combustion directly?
Because carbon and hydrogen react together to form so many different products
3
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What does a Hess cycle for calculating enthalpy of formation look like?
4
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What does a Hess cycle for calculating enthalpy of combustion look like?
