Essential Chemistry for IGCSE - Particles And Purification (Section 8 - No. 19)
What is the function of the baseline in paper chromatography?
To mark the start point for the solvent
To identify the location of the solvent
To mark the origin where the sample is spotted
To determine the Rf value
Explanation
The baseline is the starting point for the sample spots and is critical to calculate the Rf value.
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