Which of the following may depend on the path of reaction?
Correct answer: A. Energy of activation
- A. Energy of activation
- B. Enthalpy of reaction
- C. Internal energy change
- D. Change in temperature
Explanation
Energy of activation is the minimum amount of energy reactants must have to form products. It is the only one that is dependent on the path of reaction. The path of reaction determines the number of intermediates that will form. Greater the number of intermediates more will be the activation energy. On the other hand, the enthalpy of the reaction, internal energy change and change in temperature are all state reactions. They are dependant on the final and the initial values of the system.
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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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