Why does Le Chatelier's principle work?
Le Chatelier's principle works to relive stress on a system. The principle works to make a system more stable.
The laws of thermodynamics state that everything moves from order to disorder. Stack a bunch of blocks it creates an unstable system that will move to a more stable system by falling down.
If there is a greater concentrations of products than reactants this is a more order system than a balanced concentration of products and reactants. The system will move spontaneously to relieve the stress and move to a less order state. ( this is the second law of thermodynamics, the law of entropy disorder always increases)
Le Chatelier's principle works because a system will always move to relieve stress and move to a more disordered system.
The other answer is correct - Le Chatlier's principle works because the system is trying to relieve a stress. Let's look at the equilibrium constant, though.
This is a constant. The K value will be a constant...which is why its called an equilibrium constant (assuming you don't mess with temperature).
So if I add a stress...like adding more of C....the the system is going to try to relieve that stress. But, if i have more C,