Name:_____________________________________
Ch 15 Thermodynamics Drawings/Interpretation (Part 1: 15.1-15.6)
1. Explain what the system and surroundings are? Explain how they relate to
each other.
2. What are the two types of walls for a system?
3. Write the Zeroth Law of Thermodynamics. Then put it into your own words.
4. What is thermal equilibrium?
5. What is the 1st Law of Thermodynamics, write it, give the equation and
explain all the variables?
6. What does +W and –W mean for the system?
7. What does +Q and –Q mean for the system?
8. What does quasi-static mean?
9. Give the definition of isobaric, then draw and explain figure 15.5.
10. Give the formula for work during and isobaric process. Explain the variables.
11. Draw and explain the isobaric P v. V graph figure 15.6, what does the area
under the line represent?
12. What is an isochoric process?
13. Draw and explain the P v. V graph of an isochoric process figure 15.7?
14. What is an isothermal process?
15. What is an adiabatic process?
16. How is the internal energy related to work in an adiabatic process?
17. How do we find work for any gas regardless of any constant pressures,
volumes, or temperatures? Draw and explain figure 15.8.
18. Give and explain the formula for isothermal expansion or compression of an
ideal gas.
19. What happens to the internal energy during an isothermal process, how is Q
related to W?
20. Draw and explain the isothermal expansion figure 15.9.
21. Draw and explain figure 15.10. How does the adiabatic curve relate to the
two isotherms?
22. What does the internal energy equal in a gas compressing or expanding
adiabatically in terms of work?
23. Give and explain the formula for work related to an adiabatic expansion or
compression.
24. Give and explain the formula relating pressures and volumes form an
adiabatic gas. What does the power gamma represent?
25. Give the specific heat capacity formula in terms of molar specific heat
capacity ‘C”. Explain the variables.
26. Give the formulas for constant pressure (CP) and constant volume (CV).
27. What does gamma simply to for a monatomic ideal gas?
28. How is CP and CV related to “R”?
Name:_____________________________________
Ch 15 Thermodynamics Drawings/Interpretation (Part 2: 15.7-15.12)
1. Write the 2nd Law of Thermodynamics as stated in the book, and then put it
into your own words.
2. What is a heat engine? Give some examples.
3. What are the three essential aspects of a steam engine?
4. Draw and explain figure 15.12.
5. Draw and explain figure 15.13.
6. Give and explain two formulas for efficiency of a heat engine.
7. What is a reversible process?
8. Draw and explain figure 15.14.
9. What is Carnot’s Principle? How is it related to the 2nd Law of
Thermodynamics?
10. Give the formula relating your hot and cold heat reservoirs with their Kelvin
temperatures. Also give the formula for the efficiency of a Carnot Engine.
11. Sketch and explain figure 15.15.
12. Explain the refrigeration process. Sketch figure 15.17.
13. How is an air conditioner different from a refrigerator?
14. What is the coefficient of performance for a refrigerator or air conditioner?
15. How is a heat pump different from conventional heater, see figure 15.20.
16. What is entropy? Define it and give the formula.
17. Draw and explain figure 15.21.
18. State the 2nd Law of Thermodynamics in terms of entropy.
19. Draw figure 15.24 and explain.
20. Write the 3rd Law of Thermodynamics. Now put it into your own words.
21. Why do you think absolute zero can never be reached?