Two-phase titration of cerium(III) by permanganate
This paper presents a method for the two-phase titrimetric determination of cerium(III) with permanganate which does not require an expenditure of sugar and preliminary removal of chlorides and nitrates. The interaction of cerium(III) with permanganate at room temperature was studied as a function of the pH, the concentration of pyrophosphate, tetraphenylphosphonium (TPP), permanganate, and extraneous compounds, the rate of titration, and the time of stay of the solution in air before titration. The investigations were conducted according to the following methodology: water, solution of cerium(III) pyrophosphate, and TPP were introduced into an Erlenmeyer flask with a side branch near the bottom for clearer observation of the color of the chloroform phase. The authors established the given pH value, poured the water into a volume of 50 ml, and added chloroform. The result was titrated with permanganate solutions of various concentrations until a violet color appeared in the chloroform phase.
- Research Organization:
- Institute of New Chemical Problems, Chernogolovka, USSR
- OSTI ID:
- 6287676
- Journal Information:
- Ind. Lab. (Engl. Transl.); (United States), Journal Name: Ind. Lab. (Engl. Transl.); (United States) Vol. 52:8; ISSN INDLA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400105* -- Separation Procedures
ACTIVATION ENERGY
BROMINE COMPOUNDS
CERIUM COMPLEXES
CERIUM COMPOUNDS
CHEMICAL REACTION KINETICS
CHLORINATED ALIPHATIC HYDROCARBONS
CHLORINE COMPOUNDS
CHLOROFORM
CHROMIUM COMPOUNDS
COBALT COMPOUNDS
COMPLEXES
COMPLEXOMETRY
ENERGY
HALOGEN COMPOUNDS
HALOGENATED ALIPHATIC HYDROCARBONS
INTERFERING ELEMENTS
KINETICS
MANGANESE COMPOUNDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN COMPOUNDS
PERMANGANATES
PH VALUE
PHOSPHORUS COMPOUNDS
PYROPHOSPHATES
QUANTITY RATIO
RARE EARTH COMPLEXES
RARE EARTH COMPOUNDS
REACTION KINETICS
TITRATION
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS