Volumetric Analysis Flashcards
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 constituents in a sample being analyzed
Volumetric Analysis / Titrimetric Analysis / Titration
Components of a volumetric Analysis
Volumetric Solution
Analyte
Indicator
Solution of known concentration, must undergo standardization
Volumetric Solution / Standard Solution / Titrant
The substance/active constituent to be analyzed (of unknown concentration)
Analyte / Active Constituent / Sample / Titrand
Chemical which changes in color during the endpoint of the titration process
Indicator
Point denoting completion of reaction, not observable
Volumetric solution = Analyte
Equivalence Point / Theoretical Endpoint / Stoichoimetric Point
Experimental approximate of the equivalence point, can be observed, a sudden change in property of the reaction mixtures
Endpoint / Experiemental endpoint
Determination of the concentration of a solution
Standardization
Standardization is accomplished by using
Primary Standard, Secondary Standard
Carefully weighed sample of a substance of KNOWN PURITY; stable chemical compound that are available in HIGH PURITY
Primary Standardization
Standard solution used in indirect standardization; Standard solution of known concentration usually standardized by primary std.
Secondary standardization
VS in Sodium carbonate (Na2CO3)
HCl
VS in Potassiuk biphthalate (KHC8H4O4)
Aq: NaOH, KOH
Non-Aq: Perchloric Acid
VS in Benzoc Acid (C6H5COOH)
Sodium methoxide
VS in Arsenic trioxide (As2O3)
Ceric Sulfate
Iodine Solution