The entropy change in a reversible isothermal process, when an ideal gas expands to four times its initial volume is_________________?
Correct answer: A. R loge 4
- A. R loge 4
- B. R log10 4
- C. Cv log10 4
- D. Cv loge 4
Explanation
For an ideal gas in a reversible isothermal process, ΔS = R ln(V2/V1). With V2/V1 = 4, the change is R loge 4.
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