Chemistry A-Level
equations using 2[H]
What equations using 2[H] means in Chemistry A-Level, as defined for AQA.
Definition of equations using 2[H]
Check what you remember
Read the wording for your board, then hide it and explain equations using 2[H] in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Overall equations for reduction reactions use 2[H] as the reductant, and writing [H] once instead of 2[H] leaves the equation unbalanced.
Topics that use equations using 2[H]
- Aldehydes and ketones (A-level only) (AQA A-Level)
Related terms
- achiral exceptions
- alkoxide intermediate
- charged intermediate protonated
- contrast with ketones
- Fehling's solution
- fume cupboard
- hydride and cyanide nucleophiles
- hydrogen cyanide released by acid
Using equations using 2[H] 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