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pH‐Static Techniques in Volumetric Analysis II.
Author(s) -
Maccà Carlo,
Soldà Lidia
Publication year - 2002
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/1521-4109(200201)14:1<63::aid-elan63>3.0.co;2-1
Subject(s) - potentiometric titration , titration , standardization , chemistry , end point , carbonate , gran plot , titration curve , analytical chemistry (journal) , process engineering , inorganic chemistry , computer science , chromatography , electrode , organic chemistry , real time computing , operating system , engineering
Moderately concentrated strong and weak acids and bases can be titrated with results of high quality, very competitive with traditional titration methods, by using the pH‐static option available in many potentiometric titrators. The pH‐static technique is particularly suitable for standardization of secondary standard solutions; in the case of standardization of strong bases contaminated by carbonate, it yields the effective titer, prevailing at the end‐point pH of specific analyses. It can also provide precise and accurate values of acidity constants. For several applications the pH‐static approach seems suitable to supersede other titration procedures, if dedicated apparatus, capable of simultaneous controlled additions of two reactants, is made available.