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DOI:10.1155/2019/2031342 - Corpus ID: 146064813
@article{Kapilraj2019NaturalPE, title={Natural Plant Extracts as Acid-Base Indicator and Determination of Their pKa Value}, author={N. Kapilraj and S. Keerthanan and M. Sithambaresan}, journal={Journal of Chemistry}, year={2019}, url={https://api.semanticscholar.org/CorpusID:146064813}}- N. Kapilraj, S. Keerthanan, M. Sithambaresan
- Published in Journal of chemistry 10 April 2019
- Chemistry, Environmental Science
Commonly used indicators for acid-base titrations are synthetic, and this work was focused to identify the eco-friendly natural indicators and to determine their pKa values. The analytical potential of the flower extracts is very promising as seen in its application in acid-base titrimetry. These selected flower extracts were found to perform well in titrating strong acid-strong base than in weak acid-strong base. We have obtained a sharp and clear colour change from red to brownish yellow for…
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13 References
- B. BhuvaneshwariG. SivaelangoD. ParthibanN. ArunP. Kumaravel
- 2015
Environmental Science, Chemistry
Methanolic extract of Beta vulgaris was found to be a very useful, economical, simple and accurate for titration and the proposed herbal indicators can be used as a substitute to synthetic indicators.
- 7
- Shubham AgrawalN. RajK. ChouhanC. RajSameer D JainA. Balasubramaniam
- 2011
Chemistry, Medicine
Methanolic fruit extract of Punica granatum from family Puniceaceae gives sharp and intense color changes as compared to Phenolphthalein, Methyl Red and Phenol Red in titrations of acid- base titrations.
- 9
- PDF
- C. MilesC. Hagen
- 1968
Biology
Plant physiology
Extracts of the flower petals of Impatiens balsamina L contain enzymes which catalyze the glycosylation of phenolic compounds which are suggested to act naturally to glucosylate a precursor of both flavonols and anthocyanins to the 3-monoglucoside.
- 24
- PDF
- Pathan MohdA. KhanM. Farooqui
- 2011
Chemistry, Environmental Science
In this review importance of pH indicators in analytical chemistry alongwith the use of plant material or the extracts obtained from plant is described. In the present review some theories related…
- 40
- G. S. Patterson
- 1999
Chemistry
Experiments on determining the pKa of an acid-base indicator by visible spectroscopy are often found in analytical and physical chemistry lab texts. The procedure described here is a modification…
- 33
- PDF
- S. DubeyGautam SinghviAbhay TyagiH. AgarwalK. V. Krishna
- 2017
Chemistry, Medicine
This study reports the experimental value of pKa and log P for Risperidone, an anti-psychotic drug, for the first time.
- 12
- PDF
- B. SutradharD. DebK. MajumdarB. K. Datta
- 2015
Environmental Science
Sutradhar B, Deb D, Majumdar K, Datta BK. 2015. Traditional dye yielding plants of Tripura, Northeast India. Biodiversitas 16: 121-127. This present paper deals with the survey of traditional dye…
- 18
- PDF
- Saranjit SinghN. ShardaL. Mahajan
- 1999
Chemistry, Medicine
- 52
- D. TzurE. Kirowa-Eisner
- 1997
Chemistry
- 6
- M. PiattelliF. Imperato
- 1970
Chemistry
- 40
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