Gravimetric

• gravimetric analysis


  based upon the

  measurement of the weight. has a KNOWN composition
• Gravimetric methods


  quantitative

  methods that are based on mass

  measurements.
• Heating a Crucible to Constant Weight

  Constant weighing of the crucible ensures that the mass

  measurement is stable, leading to accurate results in gravimetric

  analysis.
• Digestion


  practice of maintaining unstirred mixture. improved purity and particle size.
• Filtration/Washing of Precipitates

  -Filter paper

  -Gooch crucible/ glass sintered crucible
• Washing of Precipitates (using hot water)

  dissolve impurities that may be present in the precipitate
• Drying and Ignition of Precipitate

  weighing form.