which of the following statements is correct for any thermodynamic system
Correct answer: B. internal energy and entropy are state functions
- A. the internal energy changes in all processes
- B. internal energy and entropy are state functions
- C. the change in entropy can never be 0
- D. the work done an adiabatic process is always 0
Explanation
This statement is generally true. State functions depend only on the current state of a system (its thermodynamic state), not on the path taken to reach that state. Both internal energy (U) and entropy (S) are considered state functions because their values depend solely on the current pressure (P), volume (V), and temperature (T) of the system, regardless of the specific processes that led to that state
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About System, Surroundings and State Functions
A system is the part of the universe under study, while everything outside it is the surroundings; the boundary separates them. State functions such as pressure, temperature, volume, internal energy and enthalpy depend only on the state, unlike heat and work, which depend on the path taken.
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