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29 sie 2023 · Soluble chromates react with barium ion to form a finely divided yellow precipitate of barium chromate: \[\ce{Ba^{2+}(aq) + CrO4^{2-}(aq) <=> BaCrO4(s)} \nonumber \] Barium chromate is soluble in mineral acids, but only slightly soluble in acetic acid.
Barium is a chemical element; it has symbol Ba and atomic number 56. It is the fifth element in group 2 and is a soft, silvery alkaline earth metal. Because of its high chemical reactivity, barium is never found in nature as a free element. The most common minerals of barium are barite (barium sulfate, BaSO 4) and witherite (barium carbonate ...
Learn about the definition, isotopes, and properties of barium, a soft, silvery, highly reactive metal and the heaviest nonradioactive member of the alkaline-earth elements. Find out how barium compounds are used in various applications, such as drilling fluids, paints, glasses, and medical imaging.
The Ba 2+ ion and the soluble compounds of barium (notably chloride, nitrate, and hydroxide) are generally highly toxic to humans and experimental animals. The insoluble barium compounds (notably sulfate) are inefficient sources of the Ba 2+ ion and therefore are generally nontoxic.
Learn about barium ion, a barium atom that has lost two electrons and has twice the positive charge of a sodium ion. Find chapters and articles on barium ion in chemistry, biochemistry, and neuroscience.
Find thermochemistry and ion energetics data for barium (Ba) in gas, liquid and solid phases. See standard enthalpy, entropy and heat capacity values, as well as references and methods.
Barium is a soft, silvery metal that rapidly tarnishes in air and reacts with water. It is used in drilling fluids, paint and glassmaking, and has no known biological role. Barium sulfate is insoluble and can be safely swallowed as a contrast agent for X-rays.
