Archived. HOWEVER rain water dissolves calcium carbonate, as in the formation of caves in limestone [ a form of CaCO3]. Thus, AgCl, PbBr2, and Hg2Cl2 are all insoluble. Calcium carbonate, CaCO3, is insoluble in water. Question: ID a reagent used in this experiment to distinguish CaCl2 from CaCO3. Posted by 4 years ago. Most silver salts are insoluble. CaCO3 ( Calcium carbonate ) is Insoluble in water I'll tell you the Soluble or Insoluble bond list below. AgNO3 and Ag(C2H3O2) are common soluble salts of silver; virtually anything else is insoluble. But all carbonates are readily decomposed by acids into soluble salts with the evolution of CO2. As a matter of fact, lithium carbonate is not terribly soluble in water, and is less soluble in water than Na_2CO_3, K_2CO_3; and interestingly, Li_2CO_3 is LESS soluble in hot water. Salts containing Cl -, Br -, I - are generally soluble. CaCl2 vs CaCO3 soluble/insoluble. All carbonates are insoluble except for those of the alkali metals...That's the general rule. This is due to carbon dioxide from air dissolved in the rain water. but co2 mix in water befuor the mix in caco3 . 5. There is a good reason for this, and if you are an undergrad you will be able to give the reason. CaCl2 vs CaCO3 soluble/insoluble. its density is high so caco3 is not soluble in water. 4. NH3 – Soluble in water. Start studying Soluble/Insoluble. But to all extent and puropses, we say these things are insoluble. What is the distinguishing observation. AgCl-Slightly soluble in water i.e.520 μg/100 g at 50 °C (it is nsoluble in water ) KI – Soluble in water. 0.00015 mol/L or 0.015 g/L(25°C. I just wanted to check my answer on a chem question, was having a bit of difficulty. Learn vocabulary, terms, and more with flashcards, games, and other study tools. so caco3 is soluble after mixing the co2 . Important exceptions to this rule are halide salts of Ag+, Pb2+, and (Hg2)2+. AgNO3 – Soluble. Close. 3. LiBr – Soluble in water. caco3 is solid form. That is why a white precipitate is formed when carbon dioxide is passed into lime water. hydroxides OH-are insoluble except the slightly soluble Ca(OH) 2, and the soluble salts of Group 1 metals and ammonium, and Sr and Ba from Group 2 ; most phosphates PO 4 3-and carbonates - CO 3 2-are insoluble except salts of Group 1 metals and ammonium, NH 4 + all oxides are insoluble except those of Group IA metals. CaSO4 –Soluble in water. If you want to quickly find the word you want to search, use Ctrl + F, then type the word you want to search. ZnPO4 – Insoluble in water. NaSO4-Soluble. CaCO3 – Slightly soluble in water i.e. 1.