Question

Consider the equilibrium: 2NO(g) + Cl2(g) = 2NOCl(g) for which ΔHº = -77.07 kJ. How will the amount of Cl2 at equilibrium be affected by the following changes?

A. Increase
B. Decrease
C. No effect

Answer 1

The amount of Cl2 at equilibrium can be affected by increasing or decreasing its concentration, leading to a shift in the equilibrium position.

Step-by-step explanation:

The amount of Cl2 at equilibrium will be affected by the given changes as follows:

A. Increase: If the amount of Cl2 is increased, it will shift the equilibrium to the right, favoring the production of more NOCl. This is because the reaction will try to use up the excess Cl2 to restore the equilibrium.

B. Decrease: If the amount of Cl2 is decreased, it will shift the equilibrium to the left, favoring the formation of more NO and Cl2. This is because the reaction will try to compensate for the decreased Cl2 by producing more reactants.

C. No effect: If the amount of Cl2 remains unchanged, there will be no effect on the equilibrium.