n-Octane [C 8 H 18 (l)] is burned in an automobile engine with 200 percent excess air.

Question:

n-Octane [C₈H₁₈(l)] is burned in an automobile engine with 200 percent excess air. Air enters this engine at 1 atm and 25°C. Liquid fuel at 25°C is mixed with this air before combustion. The exhaust products leave the exhaust system at 1 atm and 77°C. What is the maximum amount of work, in kJ/kg fuel, that can be produced by this engine? Take T₀ = 25°C.

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