What will happen when additional reactants are added to a system at equilibrium?

Additional reactants would break equilibrium

The position of equilibrium will shift to the right.

Explanation:

Reactants ⇌ Products

According to Le Châtelier's Principle, when a stress is applied to a system at equilibrium, the system will respond in a way that tends to relieve the stress.

If we add additional reactants, the position of equilibrium (POE) will move to the right to get rid of the added reactants.

The concentration of products will increase.