Question

What influence does an increase in product concentration have on the system which is in equilibrium?

• A. Equilibrium will shift to increase the reactant concentration.
• B. A forward reaction will be favored.
• C. A backward reaction will be favored.
• D. Equilibrium will shift to decrease the reactant concentration.

Answer 1

Answer: (A), (C)

The correct options are
A Equilibrium will shift to increase the reactant concentration.
C A backward reaction will be favored.

According to Le Chatelier's principle if there is a change in concentration, pressure or temperature of a system in equilibrium then the system will readjust itself to counteract the change and attain the equilibrium.

In the given equation, the concentration of the product is increased. The system will readjust itself to decrease the product concentration. A backward reaction will be favored. Hence, the new equilibrium mixture will contain a higher concentration of the reactant.