The discussion focuses on calculating the work done by a product gas during reversible adiabatic expansion, specifically for a combustion reaction involving ethanol. Key equations mentioned include the relationship PVγ = constant and the ideal gas law PV = nRT. Participants discuss the initial parameters, including initial volume (0.02 m3 to 0.04 m3), initial temperature (4000 K), and the amount of gas (12g of ethane). The integration of work done is highlighted as ∫P.dV, emphasizing the need to determine initial pressure for accurate calculations.
PREREQUISITESStudents and professionals in thermodynamics, chemical engineering, and physical chemistry who are involved in analyzing gas behavior during adiabatic processes and combustion reactions.
t is a combustion reaction of ethanol, volume is increasing from 0.02 m3 to 0.04 m3 with a starting temperature of 4000 K. Also the amounts are known. (12g ethane and enough oxygen)Chestermiller said:What parameters do you know about the gas in its initial state before the expansion?
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You know the initial volume, the initial number of moles of gas, and the initial temperature. From the ideal gas law, what do you get for the initial pressure?Egbert said:I
t is a combustion reaction of ethanol, volume is increasing from 0.02 m3 to 0.04 m3 with a starting temperature of 4000 K. Also the amounts are known. (12g ethane and enough oxygen)
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