Internal energy is a sum of kinetic energy and potential energy. If internal energy of a system increases, then all of the following changes may take place EXCEPT:
Correct answer: D. Route of the system may change
- A. State of the system may change
- B. Temperature of the system may change
- C. Chemical reaction may take place
- D. Route of the system may change
Explanation
When the internal energy of a system increases, several changes can indeed take place, but the "route" of the system is not one of them. The route or path taken by a system as it changes from one state to another is not determined by the change in internal energy itself. The specific changes that occur when internal energy increases depend on the nature of the system, the conditions, and the external factors influencing the system. The "route" taken by the system, which refers to the sequence of changes and the specific pathway in a thermodynamic process, is determined by the external conditions and the nature of the process, not by the internal energy change itself.
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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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