Chemistry, 08.02.2021 19:10 richtercatrina16

An unknown sample is analyzed using paper chromatography using solvent X as mobile phase. One spot is observed after the paper is developed. The same unknown substance is re-analyzed using solvent Y as the mobile phase. This time, three spots are observed after the paper is visualized. Is the unknown sample a pure substance or a mixture? Explain your answer.

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An unknown sample is analyzed using paper chromatography using solvent X as mobile phase. One spot i...