Ch. 11: EDTA Titrations

ammonia, tartrate, citrate or triethanolamine, that binds the metal strongly enough to prevent metal hydroxide from precipitating but weakly enough to give up the metal when EDTA is added. e.g., Zn2+ is usually titrated in ammonia buffer, which fixes the pH and complexes the metal ion to keep it in solution.

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Ch. 5: Quality Assurance & Calibration Methods

chem320.cs.uwindsor.ca

Detection of Analyte There are three very important considerations when deciding upon the analytical method to be used for the detection of a particular analyte.

  Quality, Methods, Calibration, Assurance, Analyte, Quality assurance amp calibration methods

Ch. 10: Acid-Base Titrations

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Titration: Weak Acid with Strong Base We will consider the titration of 50.00 mL of 0.02000 M MES with 0.1000 M NaOH. MES is an abbreviation for 2-(N-morpholino)ethanesulfonic acid, which is a weak acid with pKa = 6.27. This the reverse of the Kb reaction for the base A−.Therefore, the equilibrium constant for is K = 1/Kb = 1/(Kw/Ka (for HA)) = 5.4 × 107.

  Base, Acid, Strong, Titrations, Strong base

Ch. 26: Gravimetric Analysis

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reacting with the precipitant. e.g., In the gravimetric analysis of Be2+, Mg2+, Ca2+ or Ba2+ with the reagent N-p-chlorophenylcinnamohydroxamic acid, impurities such as Ag+, Mn2+, Zn2+, Cd2+, Hg2+, Fe2+, and Ga3+ are kept in solution by excess KCN. Post-precipitation: Impurities collect on the pure precipitated product while it is standing in the

  Analysis, Impurities

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Myers Reduction Chem 115 - Harvard University

hwpi.harvard.edu

H N N H O F H3C CH3 O CO2CH3 OTBS O2N O O CH3 Br CO2H H H N N H O H3C CH3 O OTBS O2N OH F CO2H HN SO2 CH2OH HN SO2 O O CH3 Br CH2OTHP H Mark G. Charest, Fan Liu Lithium Borohydride: LiBH4 • Lithium borohydride is commonly used for the selective reduction of esters and lactones to the

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