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Chromatography (A-level only) exam tips
Study Chromatography (A-level only) with curriculum-aligned Exam Tips resources, practice links, and exam-focused support.
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Chromatography (A-level only)
Exam tips
Understand Rf Values
Always calculate Rf values carefully and remember that they are unitless.
Rf values are crucial for identifying substances in chromatography, and understanding how to calculate them will help you analyze chromatograms effectively.
Double-check your Rf calculations
Before finalizing your answer, verify that you have used the correct distances for both the compound and the solvent front.
Accurate Rf values are crucial for identifying compounds and can significantly impact your overall score.
Carefully Analyze Chromatograms
When interpreting chromatograms, pay attention to the number of spots and their distances from the baseline.
This will help you accurately determine the number of components in a mixture and their relative polarities based on Rf values.
Always label your chromatograms
Clearly label each spot on your chromatogram with the corresponding dye or compound name.
This helps in accurately identifying the components after the separation process and is crucial for analysis.
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