1. Write the equilibrium constant expression for the following reaction:
2Fe(s) + 3H2O(l) Ì Fe2O3(s) + 2H2(g)
a.) K e q =[ F e 2 O 3 ] × 2[H2] / 2 [ F e ] × 3 [ H 2 ]
b.) K e q = [ F e 2 O 3 ] [ H 2 ] / [ F e ] [ H 2 O ]
c.) K e q = [ H 2 ] 2
d.) K e q = [ F e 2 O 3 ] ^1 [ H 2 ]^ 2 / [ F e ] ^2 [ H 2 O ] ^3: c.) K e q = [ H 2 ] 2
2. Calculate Keq for the reaction 3H2(g) + N2(g) Ì 2NH3(g) given that the
concentrations of each species at equilibrium are as follows: [N2] = 2.05 M,
[H2] = 1.56 M, and [NH3] = 1.52 M.
a.) 4.28
b.) 0.062
c.) 0.475
d.) 0.297: d.) 0.297
3. For the reaction 3H2(g) + N2(g) Ì 2NH3(g) , Keq = 0.297 at 700K.
If [H2] = [N2] = [NH3] = 1.62 M at 700K, which one of the following is correct?
a.) [N2] and [NH3] increase as the system approaches equilibrium.
b.) [H2] and [NH3] decrease as the system moves toward equilibrium.
c.) [NH3] increases as the system approaches equilibrium.
d.) [H2] and [N2] increase as the system approaches equilibrium.: d.) [H2]
and [N2] increase as the system approaches equilibrium.
4. What is the conjugate acid of CO3^2- in the reaction below?
CO3^2- + HSO4^- Ì HCO3^- + SO4^2-
a.) HCO3^-
b.) HSO4^-
c.) SO4^2-
2Fe(s) + 3H2O(l) Ì Fe2O3(s) + 2H2(g)
a.) K e q =[ F e 2 O 3 ] × 2[H2] / 2 [ F e ] × 3 [ H 2 ]
b.) K e q = [ F e 2 O 3 ] [ H 2 ] / [ F e ] [ H 2 O ]
c.) K e q = [ H 2 ] 2
d.) K e q = [ F e 2 O 3 ] ^1 [ H 2 ]^ 2 / [ F e ] ^2 [ H 2 O ] ^3: c.) K e q = [ H 2 ] 2
2. Calculate Keq for the reaction 3H2(g) + N2(g) Ì 2NH3(g) given that the
concentrations of each species at equilibrium are as follows: [N2] = 2.05 M,
[H2] = 1.56 M, and [NH3] = 1.52 M.
a.) 4.28
b.) 0.062
c.) 0.475
d.) 0.297: d.) 0.297
3. For the reaction 3H2(g) + N2(g) Ì 2NH3(g) , Keq = 0.297 at 700K.
If [H2] = [N2] = [NH3] = 1.62 M at 700K, which one of the following is correct?
a.) [N2] and [NH3] increase as the system approaches equilibrium.
b.) [H2] and [NH3] decrease as the system moves toward equilibrium.
c.) [NH3] increases as the system approaches equilibrium.
d.) [H2] and [N2] increase as the system approaches equilibrium.: d.) [H2]
and [N2] increase as the system approaches equilibrium.
4. What is the conjugate acid of CO3^2- in the reaction below?
CO3^2- + HSO4^- Ì HCO3^- + SO4^2-
a.) HCO3^-
b.) HSO4^-
c.) SO4^2-
