Point Function
A point function is single valued function which always possesses a single - value is all states. For instance each of the thermodynamics properties has single - value in equilibrium and other states. These properties are called as point function or state function.In other words,we can say that point function are those function which depend upon the initial and final point of the curve and is not affected by the path of the curve ,even if the path of the function is changed but the initial and the final points are the same then the function will give the same value .Such as pressure, volume, enthalpy, internal energy.
Path Function
Those properties, which cannot be located on graph by a point but are given by area or show on the graph.In other words,path function are those functions whose value depends upon the path traced by them .If their path is changed keeping the initial and final point same , their value will change.For example work, heat, heat transfer.
THANX
ReplyDelete