What is Ca(NO2)2? Important knowledge about Ca(NO2)2.

  1. Definition of Ca(NO2)2

1.1 Name
Ca(NO2)2 is commonly referred to as calcium nitrite. In English, this substance is referred to as Calcium Nitrite.

1.2 Molar Mass
Ca(NO2)2 consists of the elements Calcium (Ca), Nitrogen (N), and Oxygen (O) with a total molar mass of 132.1 g/mol.

1.3 Atomic Mass
In Ca(NO2)2, the atomic mass of Calcium is 40.08 g/mol, Nitrogen is 14.01 g/mol, and Oxygen is 16.00 g/mol.

1.4 Structure
Ca(NO2)2 consists of one Ca2+ ion and two NO2- ions.

  1. Properties of Ca(NO2)2

2.1 Physical Properties
Ca(NO2)2 forms white or pale yellow particles, odorless, with a salty taste. The pH of the Ca(NO2)2 solution in water is neutral.

2.2 Chemical Properties
Ca(NO2)2 reacts with strong acid to produce nitrogen dioxide and water.

  1. Common Reaction Equations

3.1 Acid Reaction
Ca(NO2)2 + 2HCl -> CaCl2 + 2NO2↑ + 2H2O
Ca(NO2)2 + 2H2SO4 -> CaSO4 + 2NO2↑ + 2H2O

3.2 Reaction with salt
Ca(NO2)2 + NaCl -> CaCl2 + 2NaNO2

  1. Synthesis of Ca(NO2)2

4.1 Lab Synthesis
Ca(NO3)2 + 2NaNO2 -> Ca(NO2)2 + 2NaNO3

4.2 Industrial Synthesis
In the industry, Ca(NO2)2 is synthesized from the reaction between CaCO3 and HNO2.

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