Edexcel IAL Chemistry A2 11.6 Iodination of propanone kinetics
Edexcel IAL Chemistry A2 11.6 Iodination of propanone kinetics
Keep propanone and acid in excess when isolating iodine, test linear iodine loss for zero order and then use rate dependence on propanone and H⁺ to constrain the mechanism.
How this is tested
- Demonstrate zero order in iodine from a linear iodine-concentration–time relationship.
- Deduce propanone and H⁺ orders from controlled initial-rate comparisons.
- Use rate = k[propanone][H⁺] to identify species required before or in the slow step.