All of the following are state functions except
Correct answer: B. Pressure
- A. Heat
- B. Pressure
- C. Volume
- D. Enthalpy
Explanation
A state function is a property whose value depends only on the current state of a system, not on the path taken to reach that state. Enthalpy (option d) is a state function because it only depends on the initial and final states of a process, not on the path taken. Similarly, heat (option a) and volume (option a) and volume (option b) are also state functions.
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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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