IB Chemistry 2.2.4 Activation energy (Ea) Questions
IB Chemistry 2.2.4 Activation energy (Ea) Questions
Secure activation-energy marks by labelling Ea correctly and sketching how Maxwell-Boltzmann curves shift when temperature changes.
How this is tested
- label Ea correctly on a Maxwell-Boltzmann diagram, including catalysed and uncatalysed paths
- sketch lower T as a taller left-shifted curve, or higher T as a lower right-shifted curve
- compare steps by Ea, e.g. 2H(g) -> H2(g) has lower Ea than bond breaking or ionization