Inorganic Chemistry Practical II

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Inorganic Chemistry Practical II

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Inorganic Chemistry Practical II The First Course By Lecturer Sinan Midhat Al-Bayati Asst. Prof. Anaam Majeed Rasheed Asst. Lecturer Al-Ameen Bariz Omar Supervised by: Dr. Rehab AbdulMahdi Al-Hassan

Experiment No. (7) Preparation of Barium Chloride Di-Hydrate BaCl2 Experiment No. (7) Preparation of Barium Chloride Di-Hydrate BaCl2.2H2O Preparation of Barium Chloride Di-Hydrate BaCl2.2H2O Barium chloride is an inorganic compoundwhose formulais BaCl2. It is one of the most common water-soluble salts of barium. Like other barium salts, it is toxic and imparts a yellow-green coloration to a flame. It is also hygroscopic. Preparation: Barium chloride can be prepared from barium hydroxide or barium carbonate, with barium carbonate being found naturally as the mineral witherite. These basic salts react with hydrochloric acid to give hydrated barium chloride. On the industrial scale, it is prepared via two-step process from barite (barium sulfate): BaSO4(s) + 4 C(s) → BaS(s) + 4 CO(g) The first step requires high temperatures. BaS + CaCl2 → BaCl2 + CaS The second step requires fusion of the reactants. BaCl2 can then be leached out from the mixture with water. From water solutions of barium chloride, the dihydrate can be crystallized as white crystals: BaCl2·2H2O.

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