Two molecules A and B approach each other along a collision trajectory.
For a collision between A and B to lead to reaction, two requirements must be satisfied:
- Acheck_circle
Sufficient KE (≥Ea) and proper orientation
- B
Only sufficient KE; orientation does not matter
- C
Equal velocities and head-on impact only
- D
Same mass and same charge
Explanation
Effective collisions need (1) energy ≥ Ea and (2) correct geometric orientation.