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