Cp - Cv for an ideal gas is equal to________________?
Correct answer: A. R
- A. R
- B. R/2
- C. 2R
- D. 3R
Explanation
For an ideal gas, the enthalpy relation gives Cp − Cv = R, where R is the gas constant on a consistent mass or molar basis. This difference represents the extra energy associated with expansion work at constant pressure.
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