Chromatography

Cards (9)

  • What are the 2 phases of Chromatography ?
    The stationary phase and the mobile phase
  • What is the stationary phase of Chromatography?
    The phase that does not move
  • What is the mobile phase of Chromatography?
    The phase that moves
  • In paper Chromatography, what is the stationary phase?
    The absorbent paper
  • In paper Chromatography, what is the mobile phase?
    The solvent (Often water)
  • What does Chromatography do?
    It separates mixtures into their constituent components
  • Name a use of chromatography?
    It can be used to identify artificial colours in food (By comparing them to results obtained from known substances)
  • What is the equation for Retention Factor / Rf value ?
    distance moved by substance / distance moved by solvent
  • How can we use Rf to identify a component?
    As long as the temperature and same solvent are used, A components Rf value remains constant - and can be used to identify the component