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AP Chemistry/Unit 6: Thermodynamics
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Hesss Law and State Functions

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How does Hess’s Law demonstrate that enthalpy is a state function for a chemical reaction?

A

It illustrates that enthalpy changes are directly proportional to reaction rates

B

It demonstrates that enthalpy is conserved only in single-step reactions

C

It shows that the total enthalpy change is independent of the reaction pathway

D

It proves that enthalpy changes are always exothermic in multi-step reactions

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