Paper Chromatography

• What is the purpose of paper chromatography?

  To separate substances in a mixture based on their different solubilities
• What are the different separation techniques mentioned before chromatography?

  • Filtration
  • Crystallization
  • Simple distillation
  • Fractional distillation
• What type of process is chromatography?

  It is a physical process that does not involve chemical reactions
• What do we call the paper used in paper chromatography?

  Chromatography paper
• What is the role of the solvent in paper chromatography?

  The solvent dissolves the ink in the color dots and carries it up the paper
• What are the two phases in paper chromatography?

  The stationary phase (the paper) and the mobile phase (the solvent)
• What does a single spot on chromatography paper indicate?

  It indicates that the color is a single pure color
• What does it mean if a color separates into multiple spots?

  It indicates that the color is a mixture of different colors
• How does the solubility of a substance affect its movement in chromatography?

  More soluble substances travel further than less soluble substances
• Why do we draw the starting line in pencil during chromatography?

  Because pen ink could dissolve in the solvent and move up the paper
• What happens to a pure compound in chromatography?

  • Produces a single spot in all solvents
  • The position of the spot may change with different solvents
• What is the significance of the RF value in paper chromatography?

  • Used to identify a compound
  • Calculated based on the distance traveled by the substance and the solvent
• Where can students find questions on paper chromatography?

  In the vision workbook linked in the video