2. Choose the CORRECT statement:
Exothermic reactions are always spontaneous Free energy is independent of temperature. A reaction which exhibits a negative value of D S cannot be spontaneous. At constant P and T, a decrease in free energy insures an increase in the entropy of the system. None of the above statements are true.
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 of the following favors a negative DG?
increasing energy and increasing entropy lowering energy and increasing entropy increasing energy and decreasing entropy lowering energy and decreasing entropy none of the above
5. The 3rd Law of Thermodynamics States that:
Energy is artificial Energy can neither be created nor lost The entropy of the universe is decreasing The entropy is zero at zero K for a perfect crystal none of the above
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