Chapter 7-Titrations (Taking Adv. of Stoich. Reactions)

Introduction to Titrations Taking Advantage of Stoichiometric Reactions

Definitions Titrimetry –  group of analytical methods based on determining the quantity of a standard reagent (of known concentration) that is required required to react completely with the analyte

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Volumetric titrimetry type of titrimetry in which the standard reagent is measured volumetrically Gravimetric titrimetry –  type of titrimetry in which the mass of the standard reagent is measured Coulometric titrimetry –  type of titrimetry in which the quantity of charge (in coulombs) requir required ed to complete a reaction with the analyte is measured

Definitions VOLUMETRIC TITRIMETR TITRI METRY Y –  type of titrimetry in which the standard reagent is measured volumetrically Neutralization Titrations –  used for the determination of natural and synthetic acids (alkalimetry (alkalimetry)) and bases acidimetry)) (acidimetry Compleximetric Titrations  –  based on complex formation between metal ions and ligands Precipitimetric Titrations –  based on formation of Precipitimetric precipitates Redox Titrations –  the analyte is consumed by an oxidizing or a reducing reagent of known concentration

VOLUME VO LUMETRIC TRIC TITRIMETR TITRIMETRY Y - More

Definit Defi nition ions s

Standard Solution  –  a reagent of known concentration that is used to carry out a titrimetric analysis Titration –  process in which a standard reagent is added to a solution of an analyte until the reaction between the analyte and reagent is judged to be complete Back-Titration –  process in which the excess of a standard reagent used to consume an analyte is determined by titration with a second standard solution. Resorted to when the rate of reaction between the analyte and reagent is slow.

Titr itra atio tion n Process