In the chromatogram shown, two spots (A and B) are observed at different heights from the baseline. Which component exhibits greater solubility in the mobile phase?
Correct answer: B. B
- A. A
- B. B
- C. Both
- D. Cannot determine
Explanation
The farther the spot travels, the greater is its solubility in the solvent.
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About Experimental Techniques in Chemistry
Separation methods are selected according to differences in solubility, particle size, volatility and sublimation behaviour. Filtration and crystallisation separate insoluble or dissolved solids, sublimation isolates suitable volatile solids, distillation separates liquids by boiling point, and solvent extraction transfers a substance between immiscible solvents.
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