multi step mechanisms
What multi step mechanisms means in Chemistry A-Level, as defined for AQA.
Definition of multi step mechanisms
Check what you remember
Read the wording for your board, then hide it and explain multi step mechanisms in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Reaction pathways in which the overall change happens through more than one step, and the rate depends on the slowest step.
Topics that use multi step mechanisms
- Determination of rate equation (A-level only) (AQA A-Level)
Related terms
- Constant half-life
- continuous monitoring
- deriving the rate equation
- evidence for mechanism
- iodine clock
- orders and molecularity
- rate against concentration graphs
- Rate-determining step
Using multi step mechanisms in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Chemistry questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
A week of Premium from your first lesson · Then the free plan continues · No card, no charge