The heat change in a reaction does not depend upon which of the following:
Correct answer: D. Number of intermediate stages involved
- A. Conditions of P or V under which a reaction is carried out
- B. Initial and final enthalpies of the reactants and products
- C. State of reactants and products
- D. Number of intermediate stages involved
Explanation
Option D is correct because enthalpy is a state function. So, enthalpy change does not depend upon the different steps involved in the chemical reaction. Hence, the enthalpy change of a reaction does not depend upon the different intermediate reactions.
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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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