It is not totally insoluble—very small amounts do dissolve.This is true of any "insoluble" ionic compound.If solid barium sulfate is shaken with water, a small amount of barium ions and sulfate ions break away from the … why is barium sulfate insoluble????? 1 decade ago. Although soluble barium compounds are toxic, suspensions of insoluble barium sulfate are routinely swallowed for upper gastrointestinal x-ray studies. a) Barium carbonate is soluble in plain water b) Stomachs contain HCl and all carbonates dissolve in acid. 4 years ago. Explain why, in a test for sulfate ions, the sample is acidified with hydrochloric acid first. 0 1. manfro. 0 0. noahukusa. Silver nitrate and sulfate ions . Nope! Source(s): barium sulfate insoluble: https://biturl.im/TwMMH. ♥miss maple♥ H 2 SO 4 reacts with Ba forming BaSO 4 which is insoluble, so it forms a thin layer on the metal's surface, preventing a further action of the acid. Pls ans this quick. Ammonium Carbonate A soluble carbonate such as ammonium carbonate reacts with \(\ce{Ba^{2+}}\) to precipitate white barium carbonate: MSO4(s) + ∞H2O ⇋ M^2+(aq) + SO4^2-(aq) Source(s): https://shrink.im/a9P8x. SrSO 4 is insoluble in acids. \(\ce{BaSO4}\) is extremely insoluble in water, alkalies, or acids, but is slightly soluble in hot, concentrated sulfuric acid. Why is barium carbonate not used? Carbonate ions also produce a white precipitate with barium chloride solution. When these two chemicals are mixed with a sulfate salt, a white precipitate forms, which is barium sulfate. Barium chloride and potassium sulfate are both ionic compounds. Barium sulfate is almost insoluble in water. Topic : Acid & Bases Qns : Why barium reacts with dilute hydrochloric acid but appears not to react with dilute sulphuric acid ? Silver sulfate (Ag 2 SO 4) is fairly soluble in water. why is BaSO4 insolube in water is there any special reason????? I would like to expand on Doctor_Boy’s answer (I am afraid I don’t read Kajola’s answers.). Because it is insoluble in water we know that it is the precipitate. im having a test 2mr. Barium Chloride is also used (with Hydrochloric acid) as a test for sulfates. BaCl 2 + K 2 SO 4 BaSO 4 + 2 KCl By examining the solubility rules we see that, while most sulfates are soluble, barium sulfate is not. Is Baso4 Soluble In Water . Why is barium sulphate insoluble? we know that majority of the ionic salts are water soluble but whats wrong barium sulfate? AgNO 3 does not form a precipitate with aqueous dilute sulfate solutions. Lv 4. When these two chemicals are mixed with a sulfate salt, a white precipitate forms, which is barium sulfate. Sulfate ion and calcium chloride. However concentrated Ag 2 SO 4 solution may be deposited as a precipitate. We would expect them to undergo a double displacement reaction with each other. 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