Question

A system is at equilibrium. Which statement correctly describes the effect on the forward and reverse reaction rates if reactants are

added to the system? (1 point)
O The reverse reaction rate becomes faster than the forward reaction rate.
O Both reaction rates increase.
O The forward reaction rate becomes faster than the reverse reaction rate.
O Both reaction rates stay the same.

Answer 1

If reactants are added to a system at equilibrium, the forward reaction rate will increase. The reverse reaction rate will also increase, but not as much as the forward reaction rate. This is because the forward reaction has more reactants available to react, while the reverse reaction has the same amount of reactants and products. The net effect is that the system will shift to the product side, and the equilibrium will be re-established.

So the answer is Both reaction rates increase.