Na2SO2, also known as sodium sulfite, is a substance found in many types of food. Its English name is Sodium sulfite. It is a chemical compound with the formula Na2SO2, which includes two sodium atoms, one sulfur atom, and two oxygen atoms. Its molecular structure consists of a sulfur atom at the center connected to two oxygen atoms via covalent bonds. The two sodium atoms are linked to the two oxygen atoms through ionic bonds.
The physical properties of Na2SO2 include: solid state at room temperature, white color, odorless and colorless. It has a neutral pH. The chemical properties of Na2SO2 include: it can react with acids to produce SO2 and sodium salt. It can also react with metal ions to produce corresponding metal sulfites.
Na2SO2 is often synthesized in the lab through the reaction between sodium hydroxide and sulfurous acid. Industrially, it is typically produced from the reaction between sodium hydroxide and sulfur dioxide.
Examples of common chemical reactions with Na2SO2 include: reacting with sulfurous acid to produce water and sodium sulfite, or reacting with chlorine to produce sodium chloride and sulfur dioxide. It can also react with metal ions such as Cu2+ to produce copper(II) sulfite.