The discussion revolves around calculating the work done by a product gas during a reversible adiabatic expansion, specifically in the context of a combustion reaction involving ethanol. Participants are exploring the relationships between pressure, volume, and temperature in this thermodynamic process.
The discussion is active, with participants providing insights and asking clarifying questions about the initial state of the gas and the relationships between the variables involved. There is a focus on deriving equations and understanding the implications of the ideal gas law in this context.
Participants note specific values such as the initial and final volumes, initial temperature, and the amount of reactants involved in the combustion reaction. There is an emphasis on understanding the initial conditions and their impact on calculations.
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?
Chet
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)
Thanks