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1. Determine the ∆Sº using Appendix G for the following reaction. C2H5OH(l) + 3 O2(g) -->...

1. Determine the ∆Sº using Appendix G for the following reaction. C2H5OH(l) + 3 O2(g) --> 2 CO2(g) + 3 H2O(l) Report your answer to three sig figs. Omit unit labels. Only add a - number is the sign is negative. Adding a + to a positive answer messes up the grading.

2. Which of the following equations will have a negative ∆S?

A. 3 H2(g)+ N2(g) --> 2 NH3(g)
B. C6H6(l)--> C6H6(g)
C. NH4OH(s)--> H2O(l)+ NH3(g)
D. NaCl(s) --> Na+(aq) + Cl-(aq)

3. When will the ∆Gº be negative for a reaction with a +∆Hº and a +∆Sº ?

A.

∆Gº will be negative at higher Temperatures.
B.

∆Gº will always be positive no matter the temperature.
C.

∆Gº will be negative at lowerTemperatures.
D.

∆Gº will always be negative no matter the temperature
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