Entropy is a thermodynamic quantity that is a measure of how dispersed the energy of a system is among the different possible ways that system can contain energy.
a. Enthalpy b. Cataphoresis c. Entropy d. Immovability
2. The total entropy of a system and its surroundings always increases for a spontaneous process. This is a statement of
a. the third law of thermodynamics. b. the second law of thermodynamics.
c. the law of conservation of matter. d. the law of constant composition.
3. The enthalpy of vaporization (ΔH°vap) of benzene is 30.7 kJ/mol at its normal boiling point of 353.3 K. What is ΔS°vap at this temperature?
a. 0.0115 J/(mol·K) b. 86.9 J/(mol·K) c. 11.5 J/(mol·K) d. 0.087 J/(mol·K)
4. Which of the following is not a spontaneous process at 25°C and 1 atm pressure?
a. iron rusting b. water boiling c. salt dissolving d. ice melting