Solution of common salt is taken as a raw material to prepare a basic salt A,
which is used in soda-acid fire extinguishers. On heating the compound A,
CO2 gas is released and another basic salt B is formed.
Answers
Explanation:
Acid Base and Salt
Common Salt (Sodium Chloride)
Sodium chloride (NaCl) is also known as common or table salt. It is formed after the reaction between sodium hydroxide and hydrochloric acid. It is a neutral salt. The pH value of sodium chloride is about 7. Sodium chloride is used to enhance the taste of food. Sodium chloride is used in manufacturing of many chemicals.
Important chemicals from sodium chloride:
Sodium Hydroxide (NaOH): Sodium hydroxide is a strong base. It is also known as caustic soda or Lye. It is obtained by the electrolytic decomposition of solution of sodium chloride (brine). In the process of electrolytic decomposition of brine (aqueous solution of sodium chloride), brine decomposes to form sodium hydroxide. In this process, chlorine is obtained at anode and hydrogen gas is obtained at cathode as byproducts. This whole process is known as Chlor-Alkali process.
2NaCl + 2H2O ⇨ 2NaOH + Cl2 + H2