Chemistry A-Level
solvent below the spots
What solvent below the spots means in Chemistry A-Level, as defined for AQA.
Definition of solvent below the spots
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Reference: AQA
The plate stands in a tank with the solvent below the baseline, never above it, or the spots dissolve into the solvent instead of climbing.
Topics that use solvent below the spots
- Chromatography (A-level only) (AQA A-Level)
Related terms
- adsorption
- fragmentation fingerprint
- gas chromatography
- gas chromatography with mass spectrometry
- lid and saturated vapour
- molecular ion peak
- pencil baseline
- retention time
Using solvent below the spots in the exam
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