Hess law states that the total enthalpy change of a reaction remains same regardless of:
Correct answer: A. Route reaction takes completion
- A. Route reaction takes completion
- B. Temperature of reactants
- C. Concentration of products
- D. Concentration of reactants
Explanation
Option A is correct since it states the correct definition of Hess's law which is: If a chemical change takes place by several different routes, the overall energy change is the same, regardless of the route by which the chemical change occurs, provided the initial and final conditions are the same.
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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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