ALKALIMETRIC TITRATION PDF

By using a difference in behaviours of ammonium salts and potassium salts in mixed solvents of wateralcohols or water-acetone, an alkalimetric titration of ammonium salts with aqueous potassium hydroxide solution as the titrant was presented. The apparent pH value of an aqueous solution of a salt was increased by mixing organic solvents, among which acetone was most effective. Comparing potassium salt and ammonium salt, the former was much influenced in increasing pH. A mixed indicator of phenolphthalein and bromophenol blue was useful. The concentration of free acid in an ammonium salt solution was also determined by an inspection of the titration curve.

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By using a difference in behaviours of ammonium salts and potassium salts in mixed solvents of wateralcohols or water-acetone, an alkalimetric titration of ammonium salts with aqueous potassium hydroxide solution as the titrant was presented. The apparent pH value of an aqueous solution of a salt was increased by mixing organic solvents, among which acetone was most effective.

Comparing potassium salt and ammonium salt, the former was much influenced in increasing pH. A mixed indicator of phenolphthalein and bromophenol blue was useful. The concentration of free acid in an ammonium salt solution was also determined by an inspection of the titration curve.

Already have an account? Login in here. Print ISSN : Journal home Journal issue About the journal. Alkalimetric titration of ammonium salts in mixed solvents. Published: June 05, received: January 31, Released: June 30, accepted: - [Advance Publication] Released: - corrected: -. Article overview. References 7. Related articles 0. Figures 0.

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[Alkalimetric Titrations of Salts of Organic Bases in the Pharmacopoeia]

Translated from: Treccani online dictionary. Alkalimetry is used in the determination of many different inorganic, organic and biological substances which have acid properties. Some examples are:. The chemical composition of olive oil can vary depending on factors like: parasite attacks, latitude, type of soil, plant variety, way olives are stored, etc.

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Acid–base titration

An acid—base titration is a method of quantitative analysis for determining the concentration of an acid or base by exactly neutralizing it with a standard solution of base or acid having known concentration. A pH indicator is used to monitor the progress of the acid—base reaction. If the acid dissociation constant p K a of the acid or base dissociation constant P K b of base in the analyte solution is known, its solution concentration molarity can be determined. Alternately, the p K a can be determined if the analyte solution has a known solution concentration by constructing a titration curve.

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