First slide

State variable and path variable

Question

Correct statement among the following is

Easy

A

internal energy is a path function, while heat is not
B

heat is path function, while internal energy is not
C

both heat and internal energy are path functions
D

both heat and internal energy are not path functions

Solution

Heat and work are path functions whereas internal energy is a state function. Internal energy does not depend upon the path followed by the system during change of state.

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