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constants
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1. Which statement is TRUE?
DS decreases with an increase in volume
free energy is independent of volume
free energy is independent of pressure
free energy is dependent on pressure
none of the above

2. The second law of thermodynamics states that:
the entropy of a perfect crystal is zero at 0 K.
the entropy of the universe is constant
the energy of the universe is increasing.
the entropy of the universe is increasing.
the energy of the universe is constant.

3. Liquid sample A freezes at -8C. Determine the signs of DH, DS, and DG.
+,+,+
+,-,-
-,-,-
-,+,0
None of the above

4. Which of these statements is false?
For a spontaneous reaction DG is negative
Independent of T, a reaction must be spontaneous if DH = 0 and DS is positive
A spontaneous reaction is always fast
A spontaneous reaction occurs without outside intervention
None of the above is false

5. In which case MUST a reaction be spontaneous, independent of T?
DH = 0, DS must be positive.
DH = 0, DS is negative.
DS = 0, DH is positive.
DH is negative, DS is positive.
None of these

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