chromatography

    Cards (11)

    • chromatography is used to separate mixtures
    • What is chromatography used for?
      To separate mixtures
    • What is the stationary phase in chromatography?
      • Paper
    • Why is a pencil line used in chromatography?
      • To prevent the ink from dissolving in the solvent
    • What is the mobile phase in chromatography?
      • Solvent
    • What happens if the solvent is above the pencil line in chromatography?
      The ink will dissolve in the solvent
    • What factors determine how far the ink moves in chromatography?
      1. The attraction to the stationary phase
      2. The solubility in the mobile phase
    • How does solubility affect the distance ink travels in chromatography?
      More soluble substances travel further
    • What is the formula for calculating Rf values in chromatography?
      • \( Rf=distance moved by substance/distance moved by solvent
    • What does Rf stand for in chromatography?
      Retention factor
    • What does the Rf value indicate in chromatography?
      It indicates how far a substance has moved relative to the solvent