Free interactive chemistry · SIM-KINETICS-001
Collision theory
A + B molecules collide. Only collisions with enough energy and the right orientation react.
Open the interactive simulation →How to use this simulation
- Set temperature, activation energy Ea and the steric factor p.
- Press play; flashes mark successful collisions.
- Compare the collision counts with theory in the “Collisions” panel.
- Press “Record k” at several temperatures to build an Arrhenius plot.
What to notice
- Raising T increases the energetic fraction far more than the number of collisions.
- The Arrhenius plot of ln k against 1/T has slope −Ea/R.
Try this
Record k at 4 temperatures and read Ea from your slope.
Try it for free →