Gravimetric

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Cards (96)

  • Chapter 4 INTRODUCTION

    1. Classical wet chemistry methods
    2. Qualitative: melting point, color, odor
    3. Quantitative: weight, volume
  • Instrumental methods
    • Use physical property of the analyte
    • Use of apparatus
    • Includes chromatography, electrophoresis
  • Gravimetry
    The determination of an element or species through the measurement of mass of a well-characterized insoluble product of a definite chemical reaction involving that element or species
  • Gravimetric Methods of Analysis
    • Based on mass measurements with an analytical balance
    • Yields highly accurate and precise data
  • Precipitation Gravimetry
    The analyte is separated from a solution of the sample as a precipitate and is converted into a compound that can be weighed
  • Volatilization Gravimetry
    1. Analyte separated from a solution by converting it to gas
    2. The mass of the gas serves as a measure of the analyte concentration
  • Electrogavimetry
    The analyte is separated by deposition of an electrode by an electric current
  • Gravimetric titrimetry
    The mass of a reagent of known concentration required to react completely with analyte provides information needed to determine the analyte concentration