A. Consider the following system at equilibrium where ΔH° = -111 kJ/mol, and Kc = 0.159, at 723 K.
N2 (g) + 3 H2 (g) = 2 NH3 (g)
When 0.16 moles of NH3 (g) are removed from the equilibrium system at constant temperature:
The value of Kc _________ increases. decreases. remains the same.
The value of Qc _________ is greater than. is equal to. is less than Kc.
The reaction must:
A. Run in the forward direction to reestablish equilibrium.
B. Run in the reverse direction to reestablish equilibrium.
C. Remain the same. It is already at equilibrium.
The concentration of H2 will _________ (increase/decrease/remain the same).
B. Consider the following system at equilibrium where ΔH° = -16.1 kJ, and Kc = 154, at 298 K:
2 NO (g) + Br2 (g) = 2 NOBr (g)
If the temperature of the equilibrium system is suddenly decreased:
The value of Kc _________ increases. decreases. remains the same.
The value of Qc _________ is greater than Kc. is equal to Kc. is less than Kc.
The reaction must:
A. Run in the forward direction to reestablish equilibrium.
B. Run in the reverse direction to reestablish equilibrium.
C. Remain the same. Already at equilibrium.
The concentration of Br2 will:
A. Increase.
B. Decrease.
C. Remain the same.