Chemistry

Problem

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

	Solubility in water	Solubility in ethanol
P	insoluble	insoluble
Q	insoluble	soluble
R	soluble	insoluble
S	soluble	soluble

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? a. P and S b. Q and S c. R and S d. Q and P

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