Chemistry A-Level
buffer pH calculation
What buffer pH calculation means in Chemistry A-Level, as defined for AQA.
Definition of buffer pH calculation
Check what you remember
Read the wording for your board, then hide it and explain buffer pH calculation in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Substituting into [H⁺] = Ka × [HA]/[A⁻], in which the volumes cancel, then pH = −log₁₀[H⁺] quoted to two decimal places.
Topics that use buffer pH calculation
- Buffer action (A-level only) (AQA A-Level)
Related terms
- acidic buffer
- basic buffer
- blood plasma buffering
- carbonic acid and hydrogencarbonate
- cosmetic and food buffers
- named species in buffer action
- partial neutralisation
- ratio controls pH
Using buffer pH calculation 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