Edexcel IAL Chemistry A2 11.9 SN1 and SN2 rate evidence
Edexcel IAL Chemistry A2 11.9 SN1 and SN2 rate evidence
Determine which concentrations appear in the rate law, connect first-order RX dependence to carbocation formation and two-reactant dependence to concerted attack.
How this is tested
- Link rate = k[RX] to an SN1 slow ionisation step and carbocation intermediate.
- Support SN2 when rate is first order in both halogenoalkane and nucleophile.
- Interpret a two-peak SN1 profile with a carbocation intermediate between transition states.