Which state function change is calculated by Hess's law by summing the enthalpies of intermediate reaction steps?
Answer and explanation
Correct answer: C. Overall enthalpy change of reaction
Hess's law states that because enthalpy is a thermodynamic state function, the total enthalpy change for a chemical reaction is identical whether the process occurs in one step or a series of steps: Delta H_total = sum(Delta H_steps).
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