Determination of Phosphoric and Sulfuric Acids in Polishing Solutions by Acid-Base Titration Using a pH Meter

1989 ◽  
Author(s):  
Samuel Sopok
Keyword(s):  
Acid Base ◽  
Acid Base Titration

Determination of the acidic sites of purified single-walled carbon nanotubes by acid–base titration

2001 ◽  
Vol 345 (1-2) ◽  
pp. 25-28 ◽  
Author(s):  
H Hu ◽  
P Bhowmik ◽  
B Zhao ◽  
M.A Hamon ◽  
M.E Itkis ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
Acid Base ◽  
Single Walled Carbon ◽  
Acid Base Titration ◽  
Acidic Sites ◽  
Walled Carbon Nanotubes

Determination Methods of Dialdehyde Celluloses from Bacterial Cellulose

2007 ◽  
Vol 361-363 ◽  
pp. 507-510
Author(s):  
Yu Hong Feng ◽  
Jia Cheng Li ◽  
Qiang Lin ◽  
Su Juan Pang ◽  
Meng Ying Zhang ◽  
...  
Keyword(s):  
Bacterial Cellulose ◽  
Amino Nitrogen ◽  
Aldehyde Group ◽  
Acid Base ◽  
Titration Method ◽  
Cannizzaro Reaction ◽  
Acid Base Titration ◽  
Determination Methods ◽  
Oxidation System

This paper addresses the determination of aldehyde group (% of dialdehyde units) in dialdehyde cellulose (DACs) oxidized from bacterial cellulose (BC). With 4 determination methods, the oxidation degrees of DACs were studied: Automatic potential titration method through Schiff base reaction, Acid-base titration in Cannizzaro reaction, Metaperiodate consumption determination, and Measurement of amino nitrogen content in DAC derivatives. By comparing determination results of these methods, we found out the proper way suitable for this metaperiodate oxidation system of BC to measure the dialdehyde unit content of the DACs.

scholarly journals Electrometric Determination Of Binary Mixtures In Food

2021 ◽  
Vol 03 (06) ◽  
pp. 8-13
Author(s):  
Narbek Sapaevich Palvanov ◽  
◽  
Mukhiddin Sultanovich Mekhmanov ◽  
Keyword(s):  
Aqueous Solutions ◽  
Binary Mixtures ◽  
Dicarboxylic Acids ◽  
Potentiometric Determination ◽  
Acid Base ◽  
Acid Base Titration

In this paper, the possibility of acid-base titration of binary mixtures of dicarboxylic acids in mixed and non-aqueous solutions is investigated. The possibility of titrimetric potentiometric determination of binary mixtures of dicarboxylic acids is shown.

scholarly journals USING POTENTIOMETRIC ACID-BASE TITRATION TO DETERMINE PKA FROM MANGOSTEEN PERICARPS EXTRACT

2019 ◽  
Vol 16 (32) ◽  
pp. 768-773
Author(s):  
L. TANIA ◽  
C. DIAWATI ◽  
M. SETYARINI ◽  
N. KADARITNA ◽  
A. SAPUTRA
Keyword(s):  
Oxalic Acid ◽  
Potentiometric Titration ◽  
Accurate Determination ◽  
Acidity Constant ◽  
Equivalence Point ◽  
Acid Base ◽  
Titrant Volume ◽  
Acid Base Titration ◽  
Ph Range

One of the uses of acid-base indicators is to show the end point of the titration, so the accurate determination of acidity constant and pH range of indicators needs to be done. This study aims to determine the acidity constant (pKa) of mangosteen pericarp extract and its accuracy as an indicator of acid-base titration. Determination of pKa was done by a simple potentiometric titration method. The titration data were plotted in three graphs, i.e., pH, ΔpH/ΔV (the (the first derivative), and Δ2pH/ΔV2 (the second derivative) versus titrant volume to determine the equivalence point of the titration. The accuracy test was carried out by comparing the volume of oxalic acid used to titrate NaOH solution using the indicator of mangosteen pericarp extract and phenolphthalein indicator. The result showed that the equivalence point was found on the titrant volume of 8.6 mL and a measured pH of 9.84. so the pKa value of mangosteen pericarp extract was 7.20, and the pH range was 6.20 to 8.20. the average volume of oxalic acid used to titrate 5 mL of NaOH using phenolphthalein as the indicator was 5.2 mL while the titration used mangosteen pericarp extract was 5.23 mL. The accuracy of mangosteen pericarp extract was 99.42%. By the result, it can be concluded that potentiometric titration can be used as a simple way to determine the acidity constant of mangosteen pericarp extract. Moreover, the mangosteen pericarp extract can be used as an alternative acid-base titration indicator to substitute the common acid-base titration in the laboratory.

Uncertainty analysis of content determination of sodium bicarbonate ear drops by acid-base titration

2019 ◽  
Vol 19 (6) ◽  
pp. 405-422
Author(s):  
Lina YANG ◽  
Xiaoxia NI ◽  
Bashi YANG ◽  
Qiping ZENG ◽  
Xiaohui CAI ◽  
...  
Keyword(s):  
Sodium Bicarbonate ◽  
Uncertainty Analysis ◽  
Acid Base ◽  
Content Determination ◽  
Acid Base Titration ◽  
Ear Drops

Determination of Alkalinity and Acidity of Water by Conductometric Acid-Base Titration

1984 ◽  
Vol 67 (5) ◽  
pp. 893-895
Author(s):  
Ivan Sekerka ◽  
Josef F Lechner
Keyword(s):  
Standard Deviation ◽  
Relative Standard Deviation ◽  
Ammonium Hydroxide ◽  
Conductometric Titration ◽  
Total Alkalinity ◽  
Acid Base ◽  
Trichloroacetic Acid Solution ◽  
Relative Standard ◽  
Acid Base Titration

Abstract The alkalinity and acidity of water are parameters of great importance for studies of aquatic ecosystems. This paper describes the determination of total alkalinity by using acid-base titration with trichloroacetic acid solution as titrant. Total acidity is determined by titration with ammonium hydroxide solution. Both titrations are monitored conductometrically. Performance is evaluated and compared with performance of the potentiometric titration. Automated conductometric titration is simple, fast (30 s/titration), sensitive (detection limit 0.1 ppm CaC03), and accurate. Relative error of the determination increased from about 1% at high levels to about 10% at 1 ppm CaC03. The relative standard deviation of alkalinity measurements ranged from to 5%; for acidity, these values ranged from 1.5 to 17%. Relative standard deviation reached 33% at lower detection limits. Samples containing noncarbonate contributory components of alkalinity (borate, silicate, phosphate, organic acids) can be reproducibly analyzed.

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