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Is the final pressure of the air greater than, less than, or equal to 1.0 atm? Explain. 3D 100 cm 200 cr e final state of an ideal gas after an adiabatic compression or expansion can be related to its L.. DTY For o dietomi e cos -7/5

Is the final pressure of the air greater than, less than, or equal to 1.0 atm? Explain. 3D 100 cm 200 cr e final state of an ideal gas after an adiabatic compression or expansion can be related to its L.. DTY For o dietomi e cos -7/5

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PV Diagrams V. Adiabatic Compression The air sample is returned to state E at 300K and is rapidly compressed to a volume of 50 cm³. The compression is rapid enough and the insulation thick enough that there is no time for any significant quantity of heat to be transferred into or out of the air. A compression or expansion with no heat transfer is called an adiabatic process (from the Greek adiabatos, meaning impassable). Give a rough sketch of this adiabatic compression process on the PV Diagram below. The final state will be called state H. A. Is the final temperature of the air greater than, less than, or equal to 300K? Explain your reasoning. 2.0 atmh 1.0 atm B. Is the final pressure of the air greater than, less than, or equal to 1.0 atm? Explain. 100 cm 200 cm V The final state of an ideal gas after an adiabatic compression or expansion can be related to its initial state by Pi;V;x= P¢V7. For a diatomic gas, y= 7/5. C. Determine numerical values for the final pressure and temperature, as a result of the adiabatic compression. Let's call the final state after this compression D. Now that you know a little more about state H, try to draw a more precise sketch of the adiabatic compression in the PV diagram below than you did in the previous diagram. PV Diagrams PHY 1122, Winter 2011
Transcribed Image Text:PV Diagrams V. Adiabatic Compression The air sample is returned to state E at 300K and is rapidly compressed to a volume of 50 cm³. The compression is rapid enough and the insulation thick enough that there is no time for any significant quantity of heat to be transferred into or out of the air. A compression or expansion with no heat transfer is called an adiabatic process (from the Greek adiabatos, meaning impassable). Give a rough sketch of this adiabatic compression process on the PV Diagram below. The final state will be called state H. A. Is the final temperature of the air greater than, less than, or equal to 300K? Explain your reasoning. 2.0 atmh 1.0 atm B. Is the final pressure of the air greater than, less than, or equal to 1.0 atm? Explain. 100 cm 200 cm V The final state of an ideal gas after an adiabatic compression or expansion can be related to its initial state by Pi;V;x= P¢V7. For a diatomic gas, y= 7/5. C. Determine numerical values for the final pressure and temperature, as a result of the adiabatic compression. Let's call the final state after this compression D. Now that you know a little more about state H, try to draw a more precise sketch of the adiabatic compression in the PV diagram below than you did in the previous diagram. PV Diagrams PHY 1122, Winter 2011
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