\[\ce{Sr^{2+}(aq) + CO3^{2-}(aq) <=> SrCO3(s)}\] Aqueous ammonia should also be added to ensure complete precipitation. Important! foods containing high levels of soluble fiber include dried beans, oats, oat bran, rice bran, … Strontium Carbonate (SrCO3) is a water insoluble carbonate salt of strontium, that can easily be converted to other Strontium compounds, such as the oxide by heating (calcination). SrCO3 (Carbonato de estroncio): Prácticamente insoluble en agua (1 parte en 100.000). Cs3PO4 (Fosfato de cesio): Soluble en agua. Before you view the answer key, decide whether or not you plan to request an extension. This compound is soluble. Both forms of fiber have health benefits. These, if they are soluble, are most likely weak and can bond and split in whatever solution it happens to be in. (NH4)2SO4 is soluble. 8.All trioxocarbonate(IV) salts are insoluble except those of NH4+,Na+ and K+. Label each of the following as soluble or insoluble. Unformatted text preview: 11/6/12 Lab 3 PostLab -‐‑ Solubility Rules WebAssign Lab 3 PostLab -­ Solubility Rules (Postlab) Current Score : 20.31 / 25 Due : Thursday, September 13 2012 11:00 PM EDT The due date for this assignment is past.Your work can be viewed below, but no changes can be made. 2. Soluble and insoluble are the two main types of fiber. 7.All oxides and Hydroxides are are insoluble except those of Na+,K+ and NH4+.Ca(OH)2 is slightly soluble. (NH4)2SO4 (Sulfato de amonio): Soluble en agua, insoluble en acetona, etanol y éter. most plant foods contain some of each kind of fiber. SrCO3 is insoluble. The aqueous ammonia assures that the concentration of carbonate ion will be high enough by preventing the hydrolysis of carbonate ion to form hydrogen carbonate ion: 3. Most insoluble ions include OH-, CO3(2-), PO4(3-), S(2-). 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