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All Flashcards

What are the steps for drawing PV diagrams?
1: Determine the initial and final states. 2: Choose appropriate scales for the P and V axes. 3: Draw the initial state as a point. 4: Determine the path of the process. 5: Draw the path on the PV diagram. 6: Label the path. 7: Draw the final state as a point. 8: Label the diagram with all relevant information.
What is the effect of adding heat to a closed system?
Increases the internal energy of the system, potentially leading to an increase in temperature or work done by the system.
What is the effect of doing work on a gas by compressing it?
Increases the internal energy of the gas, potentially leading to an increase in temperature.
What happens to the internal energy during an isothermal process?
The internal energy remains constant because the temperature is constant ($Delta U = 0$).
What happens to the heat exchange during an adiabatic process?
There is no heat exchange with the surroundings (Q = 0).
What is the effect of a clockwise cycle on a PV diagram?
Net work done by the system is negative.
What is the effect of a counterclockwise cycle on a PV diagram?
Net work done by the system is positive.
On a PV diagram, what does the area under the curve represent?
The work done during the process.
On a PV diagram of a cycle, what does the area inside the loop represent?
The net work done during the cycle.