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Soebiyanto
Fakultas Ilmu Kesehatan, Universitas Setia Budi Surakarta
Religion Humanities Economics, Econometrics & Finance Social Sciences Other

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Determination of Halogenide Salt Content in Solutions of Two Salts Using the Gravimetric Method: Penentuan Kadar Garam Halogenida pada Larutan Dua Garamnya dengan Metode Gravimetri Darmawan, Petrus; Astuti Herawati, Dewi; Soebiyanto; Arif Wibawa, D. Andang
Jurnal Kimia dan Rekayasa Vol. 5 No. 2 (2025): Jurnal Kimia dan Rekayasa Edisi Januari 2025
Publisher : Program Studi S1 Teknik Kimia, Fakultas Teknik, Universitas Setia Budi

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Abstract

So far, gravimetric analysis has always been carried out to analyze a particular substance in the form of a single substance. This method is very rarely used to analyze substances in mixture form and in the learning process in the laboratory. The aim of this research is to determine the levels of halogenide salts in solutions of two salts using the gravimetric method. The outline of this research is that a mixture of two halogenide salts is given a precipitating reactant and then gravimetric analysis is carried out, where the precipitate formed is weighed until a constant weight is obtained. The results of research analysis to determine the content of halogenide salts KBr and KCl using a sample volume of 20 ml obtained an average precipitate weight of 0.4001 g and a sample volume of 10 ml obtained an average precipitate weight of 0.2101 g. The average KCl content was 67.80% and the KBr content was 32.68% in a sample volume of 20 mL, while in a sample volume of 10 mL the KCl content was 71.49% and the KBr content was 28.56%. The average weight from stoichiometric calculations on a sample volume of 20 mL KCl is 7.43 g and KBr weighs 3.5854 g, likewise on a sample volume of 10 mL the average weight of KCl is 7.847 g and KBr is 3.133 g. Based on statistical test analysis using the independent sample t test, it shows that there is no real difference in taking 2 different sample volumes. AbstrakAnalisis gravimetri selama ini selalu dilakukan untuk menganalisis suatu zat tertentu dalam bentuk zat tunggal. Metode ini sangat jarang digunakan untuk menganalisis zat dalam bentuk campuran dan pada proses pembelajaran di laboratorium. Tujuan penelitian ini adalah untuk menetapkan kadar garam halogenida pada larutan dua garamnya dengan metode gravimetri. Garis besar penelitian ini adalah larutan campuran dua garam halogenida diberikan reaktan pengendap kemudian dilakukan analisis gravimetri, dimana endapan yang terbentuk ditimbang sampai diperoleh bobot konstan. Hasil penelitian analisis penetapan kadar garam halogenida KBr dan KCl menggunakan volume sampel 20 ml diperoleh bobot endapan rata-rata 0,4001 g dan pada volume sampel 10 ml didapatkan bobot endapan rata-rata 0,2101 g. Kadar KCl rata-rata sebesar 67,80% dan kadar KBr sebesar 32,68% pada volume sampel 20 mL, sedangkan pada volume sampel 10mL diperoleh kadar KCl 71,49% dan Kadar KBr 28,56%. Bobot rata-rata dari perhitungan stoikiometri pada volume sampel 20 mL KCl 7,43 g dan bobot KBr 3,5854 g, demikian juga pada volume sampel 10 mL bobot rata-rata KCl 7,847g dan KBr 3,133 g. Berdasarkan analisis uji statistik menggunakan independent sample t test menunjukkan bahwa tidak ada beda nyata pada pengambilan 2 volume sampel yang berbeda.
PENGEMBANGAN FARMASIPRENEUR TABLET TAMBAH DARAH BERBAHAN DASAR FERRO SULFAT DARI SCRAP BESI BENGKEL BUBUT UNTUK SISWA SMK Soebiyanto; Nur Hidayati; Lucia Sincu Gunawan; Muhammad Dzakwan; Ilham Kuncahyo; Ana Indriyati; Nicolay Wening Audrey; Sunardi; Argoto Mahayana; Bimo Putranto; Sumardiyono; Mahardira Dewantara; Afif Afghohani
BUDIMAS : JURNAL PENGABDIAN MASYARAKAT Vol. 7 No. 3 (2025): BUDIMAS : Jurnal Pengabdian Masyarakat
Publisher : LPPM ITB AAS Indonesia Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29040/budimas.v7i3.18190

Abstract

The partner in this Community Service Program is the Mandala Bhakti Health Vocational School, Pharmacy Department, located at Jalan Singosari Utara II, Nusukan Village, Banjarsari District, Surakarta City. Iron deficiency is a common nutritional problem, especially among adolescents. Scrap iron waste from machine shops has the potential to be used as a source of ferrous sulfate for the manufacture of iron supplements. This activity aims to develop iron supplement tablets from ferrous sulfate synthesized from iron scrap, ensure their safety through heavy metal testing, and enhance pharmaceutical entrepreneurship knowledge (pharmaceutical entrepreneurship) among vocational high school students. A total of 20 vocational high school students were involved in training that covered ferrous sulfate synthesis, tablet formulation, and product marketing strategies. Evaluation was conducted through pre-tests and post-tests, as well as heavy metal contamination analysis (Pb, Cu, Cd). The results showed a significant increase in knowledge, with an average pre-test score of 70 and a post-test score of 100. Heavy metal analysis showed no contamination (Pb: 0 ppm, Cu: 0 ppm, Cd: 0 ppm), making the tablets safe for use. This activity proved effective in enhancing students' knowledge and skills, and demonstrated that industrial waste can be utilized to produce valuable pharmaceutical products. The program supports the development of research-based and environmentally friendly pharmaceutical entrepreneurship among the younger generation.
Co-Authors Afif Afghohani, Afif Ana Indriyati Argoto Mahayana Arif Wibawa, D. Andang Astuti Herawati, Dewi Bimo Putranto Darmawan, Petrus Dewi Sulistyawati Gloriana Acacia Correia Belo Gunawan, Lucia Sincu Ilham Kuncahyo, Ilham Mahardira Dewantara Muhammad Dzakwan Nicolay Wening Audrey Nur Hidayati Nur Hidayati Sumardiyono Sunardi