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constants
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1. The maximum possible useful work obtainable from a process at a constant temperature and pressure is equal to the change in:
temperature
DH
DS
free energy
work

2. 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

3. 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

4. For the gas sample B, this reaction is endothermic: B-->2B. The reaction is:
always spontaneous
only at high temperatures
only at low temperatures
never spontaneous
none of the above

5. If an endorthermic reaction is spontaneous at 298 K, which of the following must be true for the reaction?
DG is greater than zero
DG is greater than zero
DG and DH are greater than zero
DH and DS are greater than zero
DG, DH, DS are all greater than zero

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