CHEM 130 EXAM 4 QUESTIONS AND CORRECT ANSWERS.

The squad law of thermodynamics states that..... - Answer for any spontaneous process, the entropy of the universe increases Enthalpy is - Answer -NOT a state function -does not depend on the state of the reactants and products -NOT equal to the heat of the reaction at constant pressure. Which of the following is NOT a state function? (a) E (b) H (c) w (d) S (e) G - Answer w A reaction that is spontaneous as written - Answer will proceed without outside intervention The thermodynamic quantity that expresses the degree of disorder in a system is - Answer Entropy What correctly indicates the relationship between the entropy of a system and the number of different arrangements, W, in the system? - Answer S = kW What is always positive when a spontaneous process occurs? - Answer DELTA S universe At equilibrium - Answer DELTA G = 0 for a reaction At a constant temperature and pressure, - Answer A reaction with a DELTA G 0 is spontaneous in the reverse direction All spontaneous processes are - Answer irreversible Processes that are spontaneous in one direction are - Answer non-spontaneous in the reverse direction