Chemistry A-Level
achiral exceptions
What achiral exceptions means in Chemistry A-Level, as defined for AQA.
Definition of achiral exceptions
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Reference: AQA
If the original groups are identical, no chiral centre forms, so methanal and symmetrical ketones like propanone yield achiral products that do not exhibit optical isomerism.
Topics that use achiral exceptions
- Aldehydes and ketones (A-level only) (AQA A-Level)
Related terms
- alkoxide intermediate
- charged intermediate protonated
- contrast with ketones
- equations using 2[H]
- Fehling's solution
- fume cupboard
- hydride and cyanide nucleophiles
- hydrogen cyanide released by acid
Using achiral exceptions in the exam
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