Chemistry A-Level
Chemical equivalence and symmetry
What Chemical equivalence and symmetry means in Chemistry A-Level, as defined for OCR.
Definition of Chemical equivalence and symmetry
Check what you remember
Read the wording for your board, then hide it and explain Chemical equivalence and symmetry in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Carbons related by a mirror plane or a rotation axis are equivalent and share a signal, so symmetry must be checked before deciding.
Topics that use Chemical equivalence and symmetry
- Spectroscopy (OCR A-Level)
Related terms
- base peak
- Bond vibration and absorption of IR radiation
- Carbon environment
- Carbon-13 NMR and molecular symmetry
- Carbon-13 NMR prediction
- Carbon-13 NMR spectroscopy
- Characteristic bond absorptions in IR
- Characteristic shifts of proton environments
Using Chemical equivalence and symmetry in the exam
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