Here are some study ideas for Exam 2, over Chapters 4-8.
Be sure to look over the labs and ask yourself,
"What is a 20-point question that could be asked about this experiment?"

Chapter 4: Heat, Work, Heat Capacity, and Calorimeters Chapter 4 quiz
a. You should know the 1st law of thermodynamics and explain why it "makes sense."
b. You should be able to calculate microscopic q, w, and DELTA_U for processes involving simple systems involving just a few particles and small amounts of energies in systems with evenly spaced energy levels.
c. You should be able to calculate q based on information relating to heat capacity and changes in temperature.
d. You should be able to relate changes in temperature to the sign of q and DELTA_U in cases where w=0.
e. You should be able to calculate w for a reaction involving a specific amount of reactants.
f. You should be able to relate data from an experiment involving a calorimeter to DELTA_U for a reaction based on a given chemical equation.
g. You should be prepared to discuss the role of system and surroundings in relation to heat and work.

Chapter 5: Bonding and Internal Energy Chapter 5 quiz
a. You should be able to calculate total bond dissociation energies given a molecular formula and a table of mean bond dissociation energies.
b. You should be able to estimate DELTA_U for a reaction based on a balanced chemical equation and a table of mean bond dissociation energies.
c. You should be able to determine DELTA_U for one chemical equation using data for DELTA_U for some other reactions using Hess' law.
d. You should be able to produce Hess diagrams such as those shown in this chapter.
e. You should think about how the ideas of Chapter 4 can be related to Chapter 5.

Chapter 6: The Effect of Temperature on Equilibrium Positions Chapter 6 scripts Chapter 6 quiz
a. Given a specific balanced chemical equation, you should be able to sketch a rough diagram showing the relative ground state energies and relative energy level spacings of reactants and products.
b. You should be able to discuss the effect of relative ground state energies and relative energy level spacings on how K changes with temperature.
c. You should be able to predict the trend in K for reactions based on a given chemical equation that indicates phases of each reaction component.

Chapter 7: Entropy (S) and the Second Law Chapter 7 quiz
a. You should be able to predict which of two (carefully) selected substances will have the higher standard molar entropy.
b. You should be able to calculate DELTA_So associated with a given chemical equation using a table of standard molar entropies.
c. You should understand the relationship between DELTA_S_surr, q, and T.
d. You should know the 2nd law of thermodynamics and explain why it "makes sense."

Chapter 8: The Effect of Pressure and Concentration on Entropy Chapter 8 quiz
a. You should be able to calculate the change in entropy when a specific number of moles of gas diffuse into a vacuum.
b. You should be able to calculate the change in entropy when two gases mix.
c. You should be able to calculate the change in entropy when a concentrated aqueous solution is diluted.
d. You should be able to calculate the entropy of a specified amount of gas at a specified pressure.
e. You should be able to calculate the value of a reaction quotient for a specified chemical equation given specific partial pressures of gases and specific concentrations of solutes.
f. You should be able to calculate the value of DELTA_S for a specified chemical equation given specific partial pressures of gases and specific concentrations of solutes.
g. You should be able to discuss why the entropy of a gas depends upon its pressure.
h. You should be able to discuss how the concept of a "reaction quotient" arises out of entropy considerations for a chemical reaction.