Practice question · Select all that apply
Which quantities are state functions, that is, which depend only on the current state rather than on the route taken to reach it?
Hints
- Three depend only on where the system is now; one depends on how it got there.
- Work has no value until you specify a process.
Show the answer
- B. Internal energy
- C. Enthalpy
- D. Temperature
Why
Internal energy, enthalpy and temperature are fully determined by the current state. Work is a transfer quantity and depends on the path, so it is not a state function.
Practise The First Law of Thermodynamics
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