Obtaining a stable, precise reading
What Obtaining a stable, precise reading means in Chemistry A-Level, as defined for OCR.
Definition of Obtaining a stable, precise reading
Check what you remember
Read the wording for your board, then hide it and explain Obtaining a stable, precise reading in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Placing the electrode in the sample, stirring gently and waiting for a stable reading before recording the pH to the precision the meter allows.
Topics that use Obtaining a stable, precise reading
- 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 Obtaining a stable, precise reading 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