Chemistry A-Level
Reaction-dependent roles of species
What Reaction-dependent roles of species means in Chemistry A-Level, as defined for OCR.
Definition of Reaction-dependent roles of species
Check what you remember
Read the wording for your board, then hide it and explain Reaction-dependent roles of species in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
The definition is about behaviour in a reaction, not a permanent label, so the same species can act as an acid in one reaction and as a base in another.
Topics that use Reaction-dependent roles of species
- Acids, bases and buffers (OCR A-Level)
Related terms
- Acid dissociation constant Ka
- acidic buffer
- Amphiprotic
- basic buffer
- Basicity
- Buffer action against added acid and alkali
- Buffer action and pH resistance
- Calibration with buffer solutions
Using Reaction-dependent roles of species 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.
Start free
All Chemistry A-Level termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge