QC1 part 2

• Volumetric Analysis

  Analytical methods in which the volume of a solution of known concentration consumed during an analysis is taken as a measure of the amount of active constituent in a sample being analyzed
• Volumetric Analysis


  • Robustness
  • Cheapness
  • Capability for high precision
  • Lack specificity
• Components of Volumetric Analysis

  • Volumetric Solution
  • Analyte
  • Indicator
  • Equivalence Point
  • Endpoint
• Volumetric Solution


  Solution of known concentration, must undergo standardization
• Analyte


  Chemical substance being analyzed
• Indicator


  Chemical which changes in color during the endpoint of the titration process
• Equivalence Point


  Point denoting the completion of reaction, equivalent amounts of the volumetric solution and analyte have reacted, not observable
• Endpoint


  Experimental approximate of the equivalence point, a sudden change in some property of the reaction mixture, made apparent by use of indicators or electrometrically, can be observed
• Titration is made feasible only when the end point is close to the theoretical stoichiometric point
• Standardization

  Determination of the concentration of a solution, accomplished by using primary or secondary standards
• Primary Standard

  Carefully weighed sample of a substance of known purity, stable chemical compound that are available in very high purity
• Secondary Standard


  Standard solution = solution of known concentration