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Comprehensive Guide to Titration Methods

Learn about titration methods based on known reactions between analyte and titrant, including different types of titrimetric methods and key terms in volumetric titrimetry. Understand primary and secondary standard solutions, standardization, and preparation techniques.

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Comprehensive Guide to Titration Methods

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  1. Amalia Sholehah Jurusan T. Metalurgi FT – UNTIRTA TITRATION METHODS

  2. Titrations are based on a reaction between analyte and a standard reagent  titrant • The rection is of known and reproducible stoichiometry • Titrimetry includes a group of analytical methods that are based on determining the quantity of a reagent of known concentration that is required to react completely with the analyte.

  3. Titrimetric methods : • Gravimetric Titrimetry • Volumetric Titrimetry • Coulometric Titrimetry • Redox Titrimetry • Amperometric Titrimetry • Spectrophotometric Titrimetry

  4. Terms in Volumetric Titrimetry • Standard solution (standard titrant)  a reagent of exactly known concentration that is used in titrimetric analysis • Equivalence point  theoretical point in a titration that is reached when the amount of added titrant is chemically equivalent to the amount of analyte in the sample

  5. End point  the point in a titration when a physical change occurs that is associated with the condition of chemical equivalence • Titration error (Et) Et = Vep - Veq where Vep= actual volume (end point) Veq = theoretical volume (equivalence point)

  6. Primary standard  a high purified compound that serves as a reference material • Primary standard must be : • High purity • Atmospheric stability • Contain no hydrate water • Modest cost • Resonably soluble in titration medium • Have a resonable large molar massa

  7. Secondary standard  a compound whose purity has been established by chemical analysis and serves as reference material for titrimetric method

  8. Ideal standard solution : • Must be sufficiently stable • React rapidly with the analyte • React (more or less) compeletely with the analyte • Undergo a selective reaction with the analyte • Standard solution preparation : • Direct method • Standardization

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