Determine the value of k c for the following reaction

26. Determine the value of K
c
for the following reaction if the equilibrium concentrations are as follows:
[N
2
]
eq
= 3.6 M, [O
2
]
eq
= 4.1 M, [N
2
O]
eq
= 3.3 × 10
-18
M. 2 N
2
(g) + O
2
(g) ⇌ 2 N
2
O(g)
A) 2.2 × 10-19
B) 4.5 × 1018
C) 2.0 × 10
-37
D) 5.0 × 1036
E) 4.9 × 10-17
27. Express the equilibrium constant for the following reaction.
2 Na(s) + 2 H
2
O(l) ⇌ 2 NaOH(aq) + H
2
(g)
2
[NaOH] [H ]
2
2 2
[Na] [H O]
2

9
E) K =
1/2
[NaOH] [H ]
2
1/2 1/2
[Na] [H O]
2
28. Consider the following reaction at equilibrium. What effect will reducing the volume of the reaction
mixture have on the system?
CuS(s) + O
2
(g) ⇌ Cu(s) + SO
2
(g)
29. Consider the following reaction at equilibrium. What effect will increasing the temperature have on the
system?
Fe
3
O
4
(s) + CO(g) ⇌ 3 FeO(s) + CO
2
(g) ΔH°= +35.9 kJ
30. Which of the following statements is TRUE?
A) If Q < K, it means the reverse reaction will proceed to form more reactants.
B) If Q > K, it means the reverse reaction will proceed to form more reactants.
C) If Q = K, it means the reaction is not at equilibrium.
D) All of the above are true.
E) None of the above are true.
31. Consider the following reaction at equilibrium. What effect will reducing the pressure of the reaction
mixture have on the system?
Xe(g) + 2 F
2
(g) → XeF
4
(g)