The solubilities of four different substances in water and ethanol are given

CHEMISTRY · Single correct · A Level · Chemistry · Chromatography · Chromatography

Problem

The solubilities of four different substances in water and ethanol are given.
Solubility in waterSolubility in ethanol
Pinsolubleinsoluble
Qinsolublesoluble
Rsolubleinsoluble
Ssolublesoluble
Some mixtures can be separated by solvation and filtration using water or ethanol as solvents. Method I uses water as the solvent. Method II uses ethanol as the solvent. Which substances can be separated from each other using both methods? (1) P and S (2) Q and S (3) R and S (4) Q and P

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