Help. Calcium hydroxide (white powder) is the chemical name for Lime water (slaked lime), is an inorganic compound with the chemical formula Ca(OH)2. answered Oct 23 by Eihaa (31.4k points) selected Oct 26 by Naaz. Calcium hydroxide is now used in place of calcium oxide in prepn of lime water. It is a colorless crystal or white powder and is produced when quicklime is mixed, or slaked with water. The chemical formula for lime is CaCO3 . The chemical or molecular formula of lime water is Ca(OH)2 C a ( O H) 2 . 2.2 Molecular Formula. It has many names including hydrated lime, caustic lime, builders' lime, slack lime, cal, or pickling lime. CaO + H2O → Ca (OH)2. Best answer. Ca(OH)2 + H2O -> Ca++ + 2OH-Then, the Ca++ reacts with the CO2 to give calcium carbonate which is very insoluble in water: Ca(OH)2 + CO2 -> CaCO3 + H2O (CaCO3 will precipitate, creating a milky solution) Put 1 teaspoon of calcium hydroxide in a clean glass jar, up to 1 gallon in size. How to Make Limewater Solution. ... in contact with excreta for at least 2 hr. c)ca (clo3)2. d)cao2cl2 . When water is added to lime calcium hydroxide Ca (OH) 2 is formed according to the following reaction. This compound is relatively stable and has greater available chlorine than sodium hypochlorite (liquid bleach). The chemical formula for lime water is Ca(OH)2. A teaspoon will result in a fully saturated solution whether you use a gallon jar or a smaller one.) Limewater is calcium hydroxide dissolved in water. Hard water is water which contains a large concentration of mineral ions – these are usually calcium and magnesium ions. The chemical formula of a chemical compound tells you the composition of one... See full answer below. Calcium hypochlorite is an inorganic compound with formula Ca(OCl) 2.It is the main active ingredient of commercial products called bleaching powder, chlorine powder, or chlorinated lime, used for water treatment and as a bleaching agent. Hence, the species X is Chlorine gas and the species Y is Bleaching powder with formula -CaOCl2. 2. CaCO3 +H20This means that the carbon dioxide and limewater react to produce calcium carbonate and water. There’s also the concept of permanent hardness and temporary hardness to complicate matters a little. b)caocl2. To be able to discuss how limescale is formed, we first need to discuss the concept of water hardness. … Chlorine gas reacts with lime water to form bleaching powder which is used as a bleaching agent in chemical industry. Lime soaps formed by reaction of calcium hydroxide with vegetable oils are adhesive and are sometimes used as ointment base (lime liniment or "carron oil"). (Limewater is a saturated solution, which means there will be some extra chemical that doesn’t dissolve. a)cacl2. Lime water reacts with chlorine to form. CO2 + Ca (OH)2 ----> CaCO3 + H2OHowever this is not an in depth answer, there's much more going on and the reaction can also reverse. 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