2. Which of the following will be true when a pure substance in liquid phase freezes spontaneously?
DG, DH, and DS are all positive DG, DH, and DS are all positive
3. A change of state occurs within a system and produces 64.0 kB of heat which is transferred to the surrounding at a constant pressure and a constant temperature of 300K. For this process DSsurroundings is:
64.0 kJ -64.0 kJ -213 J/K 213 J/K none of these
4. Which statement is FALSE?
DS increases as pressure decreases for an ideal gas, enthalpy is not pressure-dependent the lowest value of free energy occurs at equilibrium DS increases as volume increases all statements are true
5. DS for the universe is:
always positive sometimes positive always negative sometimes negative constant
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