Thermodynamics: Practice Problem & Solution

Solution Explained:

To solve this problem, we apply the core principles of Thermodynamics. Understanding the underlying formula is key to arriving at the correct answer below:

All the given statements are correct:

• A. Work and heat depend on the path taken during a process, so they are path functions.
• B. Internal energy depends only on the state of the system, making it a state function.
• C. For gases,
  $C_P > C_V$ 

  because extra heat is required at constant pressure to do expansion work.

• D. At constant volume, the gas does no work since volume does not change (
  $W = P\Delta V = 0$ 

  ).