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Krisdayanti Purba, Hendike
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SINTESIS DAN KARAKTERISASI SENYAWA ION Mg(OH)2 DENGAN METODE PENGENDAPAN Nurul Ilma Pohan, Nadiya; Sakinahdyah Harahap, Balqis; Krisdayanti Purba, Hendike; Maida Aritonang, Tiur; Siti Jahro, Iis
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 11 No. 01 (2026): Volume 11 No. 01 Maret 2026 Public
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v11i01.44077

Abstract

This study aims to synthesize and characterize magnesium hydroxide (Mg(OH)₂) using the precipitation method. The experiment was conducted by reacting magnesium chloride (MgCl₂) and sodium hydroxide (NaOH) solutions under controlled laboratory conditions. The synthesis produced a white precipitate of Mg(OH)₂ with a mass of 1.60 grams after filtration, washing, and drying. Characterization included physical observation, solubility testing, and pH measurement. The results showed that Mg(OH)₂ is a white solid with low solubility in water but dissolves in hydrochloric acid (HCl) due to neutralization reactions. The measured pH was around 9, indicating that Mg(OH)₂ is a weak base. These findings are consistent with theoretical concepts of ionic compounds, solubility equilibrium, and precipitation reactions. Therefore, the precipitation method is effective for synthesizing Mg(OH)₂ and supports the relationship between theoretical and experimental understanding in inorganic chemistry.
Co-Authors Maida Aritonang, Tiur Nurul Ilma Pohan, Nadiya Sakinahdyah Harahap, Balqis Siti Jahro, Iis