![]() The acid reacts with any carbonate ions present. Worked exampleĮxplain why, in a test for halide ions, the sample is acidified with dilute nitric acid first.Ĭarbonate ions also produce a white precipitate with silver nitrate solution. Observe and record the colour of any precipitate that forms. add a few drop of dilute silver nitrate solution.add a few drops of dilute nitric acid to the sample.Halide ionįor example, when silver nitrate is added to a solution containing chloride ions: The table shows the colours of these silver halide precipitates. Silver ions react with halide ions (Cl -, Br - or I - ions) to form insoluble precipitates. These would react with barium ions in the test, giving an incorrect positive result. Alloys of barium with metals such as aluminum, magnesium, lead, and silver are used to make bearings.Sulfuric acid, H 2 SO 4 (aq), contains sulfate ions. Barium can be used as a getter and binder for TV and vacuum tubes. Barium compounds are widely used as raw materials and fillers for rubber, plastics, pigments, coatings, paper making, textiles, paints, inks, electrodes Used as barium-based grease, oil refining, beet sugar, Rayon raw materials Used as pesticides, sterilants, rodenticides, explosives, Green pyrotechnic, signal bomb, tracer, medical X-ray photography indicators, also used in glass, ceramics, leather, electronics, building materials, metallurgy and other departments. The most important barium compounds in industry are barium carbonate, barium chloride, barium sulfate, barium nitrate, barium hydroxide, barium oxide, barium peroxide, barium chromate, Barium manganate, barium chlorate, lithopone, barium polysulfide, etc. It is mainly used as a weighting agent for oil and natural gas drilling mud, and is also an important mineral raw material for extracting metal barium and preparing various barium compounds.used as an analytical reagent for the electronics, instrumentation, and metallurgical industries.Barium metal can be used for television and realīarium sulphate PRECIPITATED - Risk and Safety Barium compounds are widely used as raw materials and fillers for rubber, plastics, pigments, coatings, paper making, textiles, paints, inks, electrodes Used as barium-based grease, oil refining, beet sugar, Rayon raw materials Used as pesticides, sterilants, rodenticides, explosives, Green pyrotechnic, signal bomb, tracer, medical X-ray photography indicators Also used in glass, ceramics, leather, electronics, building materials, metallurgy and other departments. The most important barium compounds in industry are barium carbonate, barium chloride, sulfuric acid, barium nitrate, barium hydroxide, barium oxide, barium peroxide, barium chromate, Barium manganate, barium chlorate, lithopone, barium polysulfide, etc. It is mainly used as a weighting agent for oil and natural gas drilling mud, and is also an important mineral raw material for extracting metal barium and preparing various barium compounds. 600 C with carbon can be reduced to barium sulfide. Soluble in hot concentrated sulfuric acid, dry easy to agglomerate. Practically insoluble in water, ethanol and acids. Significant decomposition began at about 1400 °c. Polycrystalline transformation occurs at around 1150 °c. Soluble in hot concentrated sulfuric acid.Ĭolorless orthorhombic crystal or white amorphous powder. Solubility is almost insoluble in water, ethanol and acid. Properties colorless orthorhombic crystal or white shaped powder. ACGIH: TWA 5 mg/m3OSHA: TWA 15 mg/m3 TWA 5 mg/m3NIOSH: TWA 10 mg/m3 TWA 5 mg/m3
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