The internal energy of a gas obeying P (V - b) RT (where, b is a positive constant and has a constant Cv), depends upon its________________?
Correct answer: C. Temperature
- A. Pressure
- B. Volume
- C. Temperature
- D. All A, B. & C
Explanation
For the equation P(V - b) = RT, the volume-dependent terms cancel in (∂U/∂V)T = T(∂P/∂T)V - P, giving zero. Therefore, with constant Cv, internal energy depends only on temperature.
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