I. DSsys > 0II. DSsurr > 0III. DSuniv > 0IV. GSsys > 0
2. Liquid sample A freezes at -8°C. Determine the signs of DH, DS, and DG.
+,+,+ +,-,- -,-,- -,+,0 None of the above
3. A system can achieve the lowest possible free energy by going into:
high pressure presence of catalyst equilibrium completion none of the above
4. The melting point of water is 0oC at 1 atm pressure because under these conditions:
DS for the process H2O(s)--> H2O(l) is positive. DS and DSsurr for the process H2O(s)--> H2O(l) are both positive. DS and DSsurr for the process H2O(s)--> H2O(l) are equal in magnitude and opposite in sign. DG is positive for the process H2O(s)--> H2O(l). None of these is correct.
5. 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
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