What is Ca(OH)2? Important knowledge about Ca(OH)2.

  1. Definition of Ca(OH)2
    Ca(OH)2, also known as calcium hydroxide, is a basic chemical compound with the formula Ca(OH)2. In English, it is called calcium hydroxide. The molar mass of Ca(OH)2 is 74.093 g/mol. Each molecule of Ca(OH)2 consists of one calcium atom, two hydrogen atoms, and two oxygen atoms. The ions of this substance include Ca2+ ions and OH- ions.

  2. Properties: Ca(OH)2
    Ca(OH)2 is a solid, white, and odorless substance. It has an average pH of 12.4 at a concentration of 1M, indicating its strong basic nature. The chemical properties of Ca(OH)2 include its ability to react with acids to form salts and water, as well as its ability to react with metals that are less reactive than calcium to form new compounds.

  3. Common Chemical Equation of Ca(OH)2
    Ca(OH)2 can participate in many different kinds of reactions. For example, it can react with hydrochloric acid to form calcium chloride salt and water (Ca(OH)2 + 2HCl -> CaCl2 + 2H2O). It can also react with metals such as aluminum to form new compounds (3Ca(OH)2 + 2Al -> Al2(Ca)3 + 3H2O).

  4. Preparation of Ca(OH)2
    Ca(OH)2 can be prepared in the laboratory through the reaction of calcium with water (Ca + 2H2O -> Ca(OH)2 + H2). On an industrial scale, it is typically produced by the acid dissociation of calcium carbonate, commonly found in seashells and limestone, to form calcium oxide, which is then contacted with water to form Ca(OH)2.

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