What is Am? Important knowledge about Am

  1. Definition of Ammonia
    Ammonia (also known as Amoniac or Amoni) is a chemical compound consisting of two elements: nitrogen and hydrogen. In English, it is called “Ammonia”. Its atomic mass is 14.007u; and its molar mass is 17.031 g/mol. The ammonia molecule consists of one nitrogen atom linked to three hydrogen atoms by three single covalent bonds. In solution, ammonia exists in the form of the ammonium ion (NH4^+).

  2. Properties of Ammonia
    2.1 Physical properties: Under standard conditions, ammonia is a colorless gas with a very unpleasant characteristic odor. The pH of an ammonia solution is very high due to its strong base properties.
    2.2 Chemical properties: Ammonia has the ability to react with acids to form salts, with oxygen to form water and nitrogen, or with metals such as sodium, potassium to form nitrites.

  3. Common chemical equations
    Reaction with metals: 2NH3 + 3CuO -> N2 + 3H2O + 3Cu
    Reaction with acids: NH3 + HCl -> NH4Cl
    Reaction with non-metals: NH3 + Cl2 -> N2 + 6HCl
    Reaction with salts: NH3 + NaCl -> NaOH + NH4Cl

  4. Preparation of Ammonia
    4.1 Laboratory preparation: Ammonia can be prepared from N2 and H2 according to the equation N2 + 3H2 -> 2NH3
    4.2 Industrial preparation: In industry, ammonia is prepared by the Haber-Bosch method, using nitrogen from the air and hydrogen from natural gas or coal.

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