Thermodynamics help in finding Temp, Volume and Pressure

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SUMMARY

This discussion focuses on applying thermodynamic principles to solve a specific problem related to temperature, volume, and pressure in a thermodynamic cycle. The user identifies key changes in pressure, volume, and temperature across different states in the cycle. They seek guidance on labeling a diagram and calculating the number of moles of the working fluid using known values. The conversation emphasizes the importance of understanding the relationships between these variables in thermodynamics.

PREREQUISITES
  • Understanding of the Ideal Gas Law
  • Familiarity with thermodynamic cycles
  • Knowledge of state variables: temperature, pressure, and volume
  • Ability to interpret thermodynamic diagrams
NEXT STEPS
  • Study the Ideal Gas Law and its applications in thermodynamics
  • Learn how to analyze thermodynamic cycles using P-V diagrams
  • Explore calculations for determining the number of moles of a gas
  • Review concepts of state changes and their effects on pressure and temperature
USEFUL FOR

Students preparing for HSC exams, particularly those studying thermodynamics, as well as educators and tutors looking to reinforce concepts related to gas laws and thermodynamic cycles.

Jeremy Stone
Hey Guys!

I need some help for solving question 2 of this example as my HSC exam is in 5 days and I want to be able to solve this question if I receive it on the paper.

Question:
9k43a0.png

Graph:
j97nuh.png

Answer for Q1 (Just the formula) :
np0y2f.png


Work I have done towards this question:

I have realized that from 1-2, there is an increase in pressure, decrease in volume and increase in temperature I have realized that from 4-1, there is an decrease in pressure, constant volume and decrease in temperature I have realized that from 3-4, there is an decrease in pressure, increase in volume and decrease in temperature I am not sure where to go from here and what values to substitue in
 

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Step 1: Label on the diagram all the temperatures, pressures, and volumes that you know.

Step 2: Is there any point on the diagram that you know all three? If so, you can calculate the number of moles of working fluid.
 

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