Character Comparison Visualization Of Natural Indicators In Alkalimetric Titration

The use of natural materials began to be developed on a large scale in chemistry. Natural substances are safe to use, easy to find, and cheaper. Biological indicators in volumetric titration are the focus of experts. This study presented a visualization of the alkalimetric titration of a weak acid with a strong base with the addition of natural indicators. Hibiscus rosa-sinensis L. and Clitoria ternatea L. flowers were used as titration indicators for diprotic acid, namely oxalic acid, with a strong base, sodium hydroxide. The phenolphthalein indicator was chosen as an indicator to compare. Maceration of flower crowns aimed to obtain biological indicator extracts. The titration was held three times for the Hibiscus flower, Clitoria flower, and phenolphthalein. The addition of flower crown extract to oxalic acid gave a pink color to the solution. There was a color change to clear when titrated. The color change indicated the endpoint of the titration. The addition of the flower crown extract indicator showed a relatively similar curve to the phenolphthalein indicator during titration. This result showed that the two flower crown extracts had the same function as phenolphthalein as an indicator for alkalimetric titration of a weak acid with a strong base.

Keywords:

Alkalimetric titration, titration’s indicator, Hibiscus rosa-sinensis L. Clitoria ternatea L.,

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1. Okezue MA, Clase KL, Byrn SR. An Effort at Improving Reliability of Laboratory Data in Titrimetric Analysis for Zinc Sulphate Tablets Using Validated Spreadsheet Calculators. Int J Pharmacol Pharm Sci . 2021;15(5):182–9.
2. Asuero AG, Michalowski T. Comprehensive Formulation of Titration Curves for Complex Acid-Base Systems and Its Analytical Implications. Crit Rev Anal Chem . 2011;41(2):151–87.
3. Susatyo EB, Damanik YF. Pengembangan E-Laboratory Instruction Model Guided Inquiry Berbasis Blended Learning Pada Materi Titrasi Asam Basa. Inov Pendidik Kim. 2021;15(1):2754–63.
4. Liu L, Ling Y, Gao Q, Fu Q. Supporting students’ inquiry in accurate precipitation titration conditions with a virtual laboratory tool as learning scaffold. Educ Chem Eng . 2022;38:78–85.
5. Erni E, Copriady J, Linda R. The Use Of Vırtual Laboratory To Improve Students’ Conceptual Understandıng In Acıd Base Tıtratıon Subject. Int J Educ Best Pract . 2019;3(1):43–9.
6. Putri ZS, Kurniawati Y. The Effectiveness of Learning Using Virtual Laboratory Toward Student Critical Thinking Ability on Acid-Base Titration Lesson. J Indones Soc Integr Chem (On Progress) . 2021;13(1):14–20.
7. Sary SP, Tarigan S, Situmorang M. Development of Innovative Learning Material with Multimedia to Increase Student Achievement and Motivation in Teaching Acid Base Titration. In: 3rd Annual International Seminar on Transformative Education and Educational Leadership (AISTEEL 2018) Development . 2018. p. 422–5.
8. Sheppard K. High school students’ understanding of titrations and related acid-base phenomena. Chem Educ Res Pract . 2006 Jan 1;7(1):32–45.
9. Astuti RT, Marzuki H. Analisis Kesulitan Pemahaman Konsep Pada Materi Titrasi Asam Basa Siswa SMA. Orbital J Pendidik Kim . 2017;1(1):22–7.
10. Wahyuni TS, Purwanto KK. Students’ conceptual understanding on acid-base titration and its relationship with drawing skills on a titration curve. J Phys Conf Ser . 2020; .
11. Pattarapongdilok N, Malichim P, Simmee N, Sichaem J. Senna Flower Extract As An Indicator For Acid-Base Titration. Rasayan J Chem . 2021;14(2):20211402–7.
12. Wiyantoko B, Astuti A. Butterfly Pea (Clitoria Ternatea L.) Extract as Indicator of Acid-Base Titration. Ind J Chem Anal . 2020;3(1):22–32.
13. Yazid EA, Munir MM. Potensi Antosianin Dari Ekstrak Bunga Rosella (Hibiscus sabdariffa L.) Sebagai Alternatif Indikator Titrasi Asam Basa. J Sains . 2018;8(15):1–7.
14. Padmaningrum RT, Marwati S, Wiyarsi A. Karakter Ekstrak Zat Warna Kayu Secang (Caesalpinia Sappan L) Sebagai Indikator Titrasi Asam Basa. In: Prosiding Seminar Nasional Penelitian, Pendidikan dan Penerapan MIPA. Yogyakarta; 2012. p. K1–9.
15. Ramadhani R, Octarya Z, Tarbiyah F, Uin K, Riau S. Pemanfaatan Ekstrak Buah Senduduk (Melastoma malabathricum L.) sebagai Alternatif Indikator Alami Titrasi Asam Basa dan Implementasinya dalam Praktikum di Sekolah. Konfigurasi J Pendidik Kim dan Terap . 2017;1(1):57–64.
16. Okoduwa SIR, Mbora LO, Adu ME, Adeyi AA. Comparative analysis of the properties of acid-base indicator of rose (Rosa setigera), Allamanda (Allamanda cathartica), and hibiscus (Hibiscus rosa-sinensis) flowers. Biochem Res Int . 2015;2015:1–6.
17. Fitri CBS, Fikroh RA. The Potential of Clitoria ternatea L. Extracts as an Alternative Indicator in Acid-Base Titration. JIPI . 2021;5(4):340–52.
18. Widyabudiningsih D, Sularasa A. Penggunaan Indikator Kubis Ungu Pada Analisis Asam Lemak Bebas dengan Metode Titrasi. Indones J Chem Anal . 2020;3(2):56–64.
19. Amperawati S, Hastuti P, Pranoto Y, Santoso U. Efektifitas Frekuensi Ekstraksi Serta Pengaruh Suhu dan Cahaya Terhadap Antosianin dan Daya Antioksidan Ekstrak Kelopak Rosella (Hibiscus sabdariffa L.). J Apl Teknol Pangan . 2019;8(1):38–45.
20. Chaurasiya A, Kumar Pal R, Kumar Verma P, Katiyar A, Kumar N, Author C. An Updated Review on Malabar Spinach (Basella alba and Basella rubra) and Their Importance. J Pharmacogn Phytochem . 2021;10(2):1201–7.
21. Saptarini M, Suryasaputra D, Nurmalia H. Application of Butterfly Pea Extract (Clitoria ternatea Linn) as An Indicator of Acid-Base Titration Application of Butterfly Pea (Clitoria ternatea Linn) extract as an indicator of acid-base titration. J Chem Pharm Res . 2015;7(2):275–80.
22. Madushan R, Vidanarachchi JK, Prasanna PHP, Werellagama S, Priyashantha H. Use of natural plant extracts as a novel microbiological quality indicator in raw milk: An alternative for resazurin dye reduction method. LWT - Food Sci Technol . 2021;144:1–9.
23. José Baeza-Baeza J, Pini O, Pérez-Pla FF, García-Álvarez-Coque MC, García-Álvarez MC. Solving Chemical Equilibria in Titrimetry with the Inclusion of Ionic Strength Using OCTAVE and EXCEL. World J Chem Educ . 2021;9(3):81–7.
24. Walkowiak M, Nehring A. Using ChemDuino, Excel, and PowerPoint as Tools for Real-Time Measurement Representation in Class. J Chem Educ . 2016;93(4):778–780.
25. Whiteley R V. The Simulation of an Oxidation−Reduction Titration Curve with Computer Algebra. J Chem Educ . 2015;92(5):950–3.
26. Kapilraj N, Keerthanan S, Sithambaresan M. Natural Plant Extracts as Acid-Base Indicator and Determination of Their pKa Value. J Chem . 2019;2019.
27. Riniati R, Sularasa A, Febrianto AD. Ekstraksi Kembang sepatu (Hibiscus Rosa Sinensis L) Menggunakan Pelarut Metanol dengan Metode Sokletasi untuk Indikator Titrasi Asam Basa. Indones J Chem Anal . 2019;2(01):34–40.
28. Colmenero F. Mechanical Properties of Anhydrous Oxalic Acid and Oxalic Acid Dihydrate. Phys Chem Chem Phys . 2019;21(5):2673–90.
29. Leshe S, Baye H. Extraction of Green Acid-Base Indicators From Acanthus Pubescens Flower for Use in the School Laboratory. Int J Chem . 2020;12(2):35.
30. Owolabi RU, Usman MA, Adejumo LA, Aderibigbe FA, Chinazom, Uba M, et al. An Investigation of the Analytical Potentials of Flower Extracts as Bio-Indicators in Acid Base Titration. SEU J Sci Eng. 2018;12(2).
31. Payal R, Jain A, Malhotra P. Use of Cost Effective Kitchen Ingredients in Acid-Base Titrations: A Greener Approach. Green Chem Environ Sustain Chem Educ . 2018;147–51.

Journal of the Turkish Chemical Society Section A: Chemistry-Cover

Başlangıç: 2014
Yayıncı: Türkiye Kimya Derneği

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