Unformatted text preview: Titration Measures the
Concentration of an Analyte - By determining the VOLUME of titrant
needed to fully react with the analyte - We ﬁnd the MOLES of titrant used and thus
the MOLES of analyte present - Then we can calculate the concentration of
analytc present in the original sample What Makes a Titration Work? A+B9C ch=[C]/[A][B] airﬂqﬂw‘ﬁ V24 There must be a way of telling when enough
(equivalent point) titrant has been added. Indicator soln, visual color change, inﬂection
point are used to tell when the end point is
v reached. Equivalence point ¢ end point. The balanced reaction is known and calculations
are based on the stoichiometry of the reaction. Terms Related to Volumetric Analysis Equivalence point versus End-point. Blank titration.
Primary standard and Standardization.
Direct and Indirect Titration. - End-point Detection Strategies:
- Acid-base indicators.
- Metal ion indicators.
- Inﬂection point.
- First and Second derivatives. - Extrapolation, as in spectrometric, conductance
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- Fall '08