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← ScienceWhich outcome results when a non-ideal gas replaces an ideal gas within an otherwise perfect Carnot cycle engine?
A)Reduced total entropy change due to irreversibilities
B)Increased thermal efficiency at all temperatures
C)Greater maximum-work produced during isothermal expansion
D)Changes to heat transfer behaviour impacting performance✓
💡 Explanation
When a non-ideal gas is used, intermolecular forces affect volume change and real-gas behavior deviates from ideal gas law because compressibility factor modulates equation state relation, thus impacting the heat transfer through the system. Therefore heat transfer variations result, because thermal energy needed for isothermal stages alters, rather than efficiency increases due to internal irreversibilities.
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