electrode half-equations
What electrode half-equations means in Chemistry A-Level, as defined for AQA.
Definition of electrode half-equations
Check what you remember
Read the wording for your board, then hide it and explain electrode half-equations in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
At the negative electrode hydrogen is oxidised and at the positive electrode oxygen is reduced, each written with OH⁻.
Topics that use electrode half-equations
Related terms
- cell polarity
- continuous supply of reactants
- disposal and toxicity
- risk and benefit
- water as only product
- alkaline fuel cell
- EMF
- EMF of a fuel cell
Using electrode half-equations 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