Chapter 16 - Reaction Energy

DUE MAY 12

• 1. What is meant by enthalpy change?

  2. What is meant by enthalpy of reaction?

  3. Describe the relationship between a compound’s stability and its enthalpy of formation.

  4. What is the importance of Hess’s law to thermodynamic calculations?

  5. How much energy would be absorbed as heat by 75 g of iron when heated from 295 K to 301 K?

DUE MAY 14

• 1. What kind of enthalpy change favors a spontaneous reaction?

  2. What is entropy, and how does it relate to spontaneity of reactions?

  3. List several changes that result in an entropy increase.

  4. Define free energy, and explain how its change is calculated.

  5. Explain the relationship between free-energy change and spontaneity of reactions.