The equilibrium constant for the reaction
2SO2 (g) +
O2 (g) ⇌
2SO3 (g) is 56. If the
concentrations of SO2 and O2 at
equilibrium are 0.15 M and 0.20 M respectively, what is the
concentration of SO3?
0.34
0.50
0.25
0.050
2. Calculate the Kc at -10 °C of the equilibrium reaction 3 A(g)
+ 2 B(g) ⇌ C(g) + D(g) if the value of Kp is 4.7 x 10^-4.
Assume that the reaction happens in a closed container.
0.045
5.2
4.7
-0.045
3. Suppose for a synthesis of hydrogen fluoride from hydrogen
and fluorine, 3.000 moles of H2 and 6.000 moles of
F2 are mixed in a 3.000-L flask. Assume that the
equilibrium constant for the synthesis reaction at this temperature
is 1.15x10^2.
H2 (g) +
F2 (g) ⇌
2HF (g)
What is the molar concentration of HF at equilibrium?
What is the molar concentration of F2 at
equilibrium?
At a Kc of 4.15x10^3, predict the direction of the
reaction if the starting concentrations are [H2]=2.30M,
[F2]= 1.25x10^-3 M, and [HF]= 4.37
A.
3.2 x 10^-2
B.
Reverse
C.
2.140
D.
Forward
E.
The system is at equilibrium
F.
1.936
G.
1.032
H.
0.968