Reaction Kinetics Box

0.00 s

Drag to orbit · Scroll to zoom · Drag cards to either edge to dock

Drop cards here

Particles

Max packing (%)

Particle limits are the sum of sphere volumes vs this fraction of the box.

Initial A 20

Initial B 20

Initial C 0

A, B, and C share one volume budget, so box size and radii change how many you can add. Counts apply when you reset.

Box edge length 10.0

Atom radius (A, B) 0.18

Product radius (C) 0.24

Larger box or smaller radii raise how many particles fit in the volume budget; the reverse lowers it.

Box temperature 450 K

Higher T raises the average kinetic energy, so more collisions clear the activation barrier.

⟨E⟩ 0.0 1½ kT 0.0 E ≥ Ea 0%

Maxwell–Boltzmann Enough to react Ea

The shaded tail is the fraction of the Maxwell–Boltzmann curve with kinetic energy at or above the forward activation energy.

Enable reverse reaction

Forward Ea (A + B → C) 4.8

Reverse Ea (C → A + B) 7.6

Defaults are exothermic: reverse Ea is higher, so equilibrium slightly favors C.

20Atom A

20Atom B

0Product C

0.0 Collisions / s

0.0 Forward / s

0.0 Reverse / s