ΔH can be measured indirectly by applying
Correct answer: D. Hess's Law
- A. Avogadro's law
- B. Faraday's Law
- C. Gas's Law
- D. Hess's Law
Explanation
Hess's Law states that the total enthalpy change during a chemical reaction is the same, regardless of whether the reaction occurs in one step or multiple steps. This means that the enthalpy change is a state function and is independent of the pathway taken.
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About Thermochemistry and Energetics of Chemical Reactions
Thermochemistry measures energy changes in chemical reactions and distinguishes exothermic from endothermic processes. Work covers systems, surroundings and state functions, internal energy, the first law of thermodynamics, enthalpy and Hess's law, including the sign conventions used when heat enters or leaves a system.
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