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
VS in Potassium dichromate (K2Cr2O7)
Na thiosulfate
VS in Sodium oxalate (Na2C2O4)
K Permanganate
VS in Sodium chloride (NaCl)
Silver nitrate
VS in Calcium carbonate (CaCO3)
EDTA
Primary Standard for Standardization of HCl
Sodium carbonate (Na2CO3)
Primary Standard for Standardization of NaOh, KOH, Perchloric Acid
Potassium biphthalate
Primary Standard for Standardization of sodium methoxide
Benzoic Acid
Primary Standard for Standardization of Ceric Sulfate & Iodine Soln
Arsenic trioxide
Primary Standard for Standardization of Na thiosulfate
Potassium dichromate (H2Cr2O7)
Primary Standard for Standardization of K permanganate
Sodium oxalate (Na2C2O4)
Primary Standard for Standardization of Silver Nitrate
Sodium chloride
Primary Standard for Standardization of EDTA
Calcium carbonate
The number og gram-mEq involved in a quantitative procedure
Milliequivalent Weight
Weight in grams which is chemically equivalent to 1 gram atom of Hydrogen
Gram-equivalent weight