2 NO₂ (Brown Gas) ⇌ N₂O₄ (Colorless Gas)
Equilibrium Constant (K)
0.00
Reaction Quotient (Q)
0.00
Favors Reactants Favors Products
Expression:
Q = [N₂O₄] / [NO₂]²

Principles:
If Q < K: Shifts Right (→)
If Q > K: Shifts Left (←)
If Q = K: Equilibrium (⇌)

Le Chatelier's Principle: System shifts to consume excess until Q equals K.