Answer:
The position of equilibrium will shift to the left.
Step-by-step explanation:
The general equation for the dissociation of a weak base is
B + H₂O ⇌ BH⁺ + OH⁻
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 you apply a stress by adding more BH⁺ or OH⁻, the system will respond by moving in a direction that gets rid of the added ions.
The position of equilibrium will shift to the left, forming more of the undissociated base.