Chemistry A-Level
Identification by comparison with standards
What Identification by comparison with standards means in Chemistry A-Level, as defined for OCR.
Definition of Identification by comparison with standards
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Reference: OCR
Comparing the Rf of an unknown spot with that of a known standard run under the same conditions helps identify the component.
Topics that use Identification by comparison with standards
- Chromatography and qualitative analysis (OCR A-Level)
Related terms
- 2,4-dinitrophenylhydrazone derivative
- Acidified dichromate(VI) and alcohols
- Adsorption and differential movement
- Adsorption and spot position
- Bromine water and alkenes
- Bromine water test for alkenes
- Carbon–halogen bond strength and reactivity
- Carbonyl compounds: aldehydes and ketones
Using Identification by comparison with standards in the exam
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