Potentiometric Titration of Weak Aċids in Anhydrous Ethylenediamine

Moss, M. L.; Elliott, John H.; Hall, Robert T.

doi:10.1021/ac60021a002

Cited by 93 publications

(26 citation statements)

References 8 publications

(5 reference statements)

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“…Moss, Elliott, and Hall (5) showed that weakly acidic compounds behave as strong acids when titrated in a basic solvent such as ethylenediamine. Excellent end points were obtained potentiometrically using either hydrogen-calomel or antimonyantimony electrode combinations.…”

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confidence: 99%

Titration of Acids in Nonaqueous Solvents

Fritz¹,

Lisicki²

1951

Anal. Chem.

225

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VOLUME 2 3, NO. 4, APRIL 195 1 589it was titrated while boiling against standard potassium permanganate solution.Both methods avoid the interference of chloride ion in the permanganate titration and gave identical results.This method was then used to investigate the conversion of aconitic acid to itaconic acid. In Figure 2 the results of experiments at various concentrations are reported, showing the determination with the bromine method and the new method. The regular and plausible course of the curve in the new method and the irregular course in the case of the bromine method are evidence of the usefulness of the proposed method.

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confidence: 99%

Titration of Acids in Nonaqueous Solvents

Fritz¹,

Lisicki²

1951

Anal. Chem.

225

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“…Although Potentiometrie titrations usually require more expensive equipment and are more time-consuming than visual titrations, they are regarded as the more reliable method for locating the true equivalence point in titrimetric determinations of acids and bases. The antimony electrode serves as a good indicator electrode, and, in conjunction with a fibre-type calomel electrode as reference electrode, it has been used in ethylenediamine (33 ) and dimethylformamide solutions. The conventional glass-calomel electrode system is very satisfactory in aqueous or aqueous-ethanolic media for semimicro or micro-scale determinations of carboxylic acids with aqueous or ethanolic sodium (or potassium) hydroxide solution as titrant.…”

Section: (A) Choice Of the Electrodesmentioning

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The Determination of Carboxylic Acids

Tiwari

Sharma

1970

The Determination of Carboxylic Functional Groups

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“…Basic soIvents such as ethylenediamine (4,9) and n-butylamine (6) have been used in the determination of weak and very weak acids for several years. However, the leveling effect these solvents exert makes differentiation between mineral and carboxylic acids im- , -I --, .…”

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confidence: 99%