In thermodynamics, path functions such as heat or work are dependent on path pro
ID: 2998271 • Letter: I
Question
In thermodynamics, path functions such as heat or work are dependent on path process, point functions are not. Properties enthalpy and entropy are deriven from heat and work relationships. However, When we calculate these properties just like point function. How does it possible? In thermodynamics, path functions such as heat or work are dependent on path process, point functions are not. Properties enthalpy and entropy are deriven from heat and work relationships. However, When we calculate these properties just like point function. How does it possible?Explanation / Answer
Answer:
I will explain this to you:
Enthalpy, entropy, internal energy these are point functions defines the state of the system, but these are derived from path functions like heat (Q) and work (W).
But a common factor in these properties (point functions) is that these are derived as a difference (ex: we always define difference in internal energy not absolute internal energy)
Example:
Change in the internal energy between the states 1 and 2 = (heat transfer between 1 & 2)