First slide

Entropy

Question

Which of the following statements is correct for any thermodynamic system

Moderate

A

The internal energy changes in all processes
B

Internal energy and entropy are state functions
C

The change in entropy can never be zero
D

The work done in an adiabatic process is always zero

Solution

The internal energy and entropy depend only on the initial and final states of the system and not on the path followed to attain that state.

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