Equilibrium Worksheet

1. Given each of the following values, is the starting material (SM) or product (Pdt) lower in
energy?
a. Go = 8.0 kJ/mol ________
b. Keq = 10
________
c. Go = -12 kJ/mol ________
d. Keq = 10-3
________
2. For each of the following reactions, determine whether So is a positive value or a
negative value.
a. C2H2O2 (g) ⇌ 2 CO(g) + H2(g)
______
b. H2O(g) ⇌ H2O(s)
______
c.
→
d. CH3COOCH3 + H2O →
CH3COOH + CH3OH
+
________
_______
3. Processes are always spontaneous, regardless of temperature when ______________.
(H and S refer to the system)
a.
b.
c.
d.
e.
H > 0 and S < 0 H < 0 and S < 0 H > 0 and S > 0
H < 0 and S > 0
None of the above, as temperature must always be taken into account.
4. At 25oC, the Go for the conversion of axial fluorocyclohexane to its equatorial position
is -1.0 kJ/mol.
a. Calculate the Keq for this equilibrium.
b. Calculate the percentage of axial and equatorial conformations present at
equilibrium.