The discussion revolves around the concept of state functions in chemical thermodynamics, exploring definitions, examples, and the conditions under which certain variables are considered state functions. Participants express confusion and seek clarification on the topic.
Participants generally agree on the definition of state functions as being dependent on the current state of the system, but there is still some confusion regarding the implications of state changes and whether all state functions must change with a state change.
Some participants express uncertainty about the relationship between state changes and state functions, indicating a need for further clarification and examples to solidify understanding.
It is very hard to understand what you are saying. Can you please reword this in an alternate way? Maybe examples would help too.Karan Punjabi said:Guys I am getting confused that what is state function? People say if state changes then state function also changes. But my view is if that variable changes then only state changes and its not necessary when a state change will always lead to change of every state function.
Yeah I understood about the state functions...now having a clear view to it...thank youTazerfish said:I think I can explain state functions.
Things that are only dependent on the current state of the system are state functions.
Gravitational potential energy is a state function.It is determined by the position of the masses in your system.(On Earth the height above the ground.)
Thermal energy is a state function . Just knowing the temperature and the specific heat capacity you can figure it out.
Enthalpy is also a state function.It is dependent on the same things thermal energy depends and additionally on the volume and pressure of the system.
You can go on like this.Entropy and stuff like the other thermodynamic potentials are also a state function
The amount of frictional energy an object "loses" to the environment between two points is not only dependent on the two points.
It is not a state function because it depends on the path.
I suspect that did not help you much, but feel free to ask it again in a more specific way.