Le Chatelier's Principle
Shifting Equilibria: Le Châtelier's Principle - Chemistry: Atoms First 2e| OpenStax

Consider the following hypothetical reaction that forms an equilibrium:
A (aq) + B (aq) = C (aq)
Kₑq = 100 [C][A][B]

If a system at equilibrium has a concentration of 1.0 x 10⁻⁴ M and 1.0 x 10⁻⁴ M for reactants A and B, respectively, what would the concentration of C be at equilibrium?

Now, let's increase the concentration of one of the reactants. If a system at equilibrium has a concentration of 1.0 M and 1.0 x 10⁻⁴ M for reactants A and B, respectively, what would the concentration of C be at equilibrium?