Le Chatelier's principle and equilibrium shift
What Le Chatelier's principle and equilibrium shift means in Chemistry A-Level, as defined for OCR.
Definition of Le Chatelier's principle and equilibrium shift
Check what you remember
Read the wording for your board, then hide it and explain Le Chatelier's principle and equilibrium shift in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Adding acid raises [H⁺] so equilibrium shifts left towards HA, while adding alkali removes H⁺ so equilibrium shifts right towards A⁻.
Topics that use Le Chatelier's principle and equilibrium shift
- 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 Le Chatelier's principle and equilibrium shift 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