5) What does Le Chatelier's principle say will happen when external changes are made to a system that includes reversible chemical reactions in equilibrium? (2 points)
2 points
No changes will occur.
No net changes will occur as the forward and backward reactions will occur at matching rates.
The system will permanently leave equilibrium and proceed to an end point.
The system will react in opposition to the external changes to bring the system back to equilibrium.