Surface Catalysis 2D: Langmuir-Hinshelwood Lattice & Rate Law (2D)

This 2D companion runs the same Langmuir-Hinshelwood CO-oxidation mechanism as the 3D version — CO sticks to a single empty active site, O₂ dissociates and needs two adjacent empty sites, and a neighbouring CO*/O* pair reacts to CO₂ and desorbs — but draws it top-down on a plain lattice next to its own analytic dissociative rate law, r = k_r·(K_A P_A)·√(K_B P_B) / (1+K_A P_A+√(K_B P_B))², solved fresh every frame. Set the CO and O₂ partial pressures and temperature, and watch the stochastic lattice's coverage-vs-time trace and its saturation collapse line up with exactly where the analytic volcano curve's marker sits.