The enthalpy change of a reaction does not depend on
Correct answer: C. diffrent intermediate reactions
- A. initial and final enthalpy change of reaction
- B. state of reactants and products
- C. diffrent intermediate reactions
- D. nature of reactant and products
Explanation
Enthalpy change of a reaction is a state function. Its value is dependant on the initial and final values of the system. Only option C does not affect the enthalpy change of reaction. It affects the activation energy.
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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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