Answer:
2CO(g) + O2(g) ⇌ 2CO2(g)
Increasing the concentration of CO - ↓ ↓ ↑
Increasing the concentration of CO2 - ↑ ↑ ↓
Step-by-step explanation:
The given reaction is
2CO(g) + O2(g) ⇌ 2CO2(g)
a) When the concentration of CO is increased, the stress is relieved as the reaction that consumes the added CO occurs more rapidly than its reverse reaction, for example., the forward reaction rate increases. The equilibrium will shift in favor of the product. However, the concentration of reactants (CO and O2) decreases and product concentration (CO2) increases.
b) When the concentration of CO2 is increased, the stress is relieved as the reaction that consumes the added CO2 occurs more rapidly than its reverse reaction, for example., the rate of backward reaction increases. The equilibrium will shift in favor of the reactant. Therefore, the concentration of reactants (CO and O2) increases, and the product concentration (CO2) decreases.
Hope this helps!