Chemical equation of reaction between sodium carbonate and sodium hydroxide

The two do not react, and there is no chemical equation. However, sodium bicarbonate can react with sodium hydroxide, and the reaction equation between NaHCO3 and NaOH is: nah co 3+NaOH = na2co 3+H2O. Sodium carbonate (Na2CO3), molecular weight 105.99. The purity of chemicals is more than 99.5% (mass fraction), which is also called soda ash, but it belongs to salt, not alkali. Soda soda: Before soda soda was synthesized artificially, it was found in ancient times that some seaweed was dried in the sun, and the burnt ash contained alkali. After leaching with hot water and filtering, brown lye can be obtained for washing. A large amount of trona comes from minerals and is mainly buried underground or in alkaline lakes. The trona ore occurring in the sedimentary layer has the highest grade and is widely distributed.

The earliest method of synthetic soda ash was invented at the end of 18. In Lublan, France, mirabilite was reduced by limestone and coal at high temperature and carbonized to obtain coarse black ash mainly containing Na2C03. After leaching, evaporation, refining, recrystallization and drying, heavy soda ash with purity of about 97% was obtained. 186 1 year, Belgian E. Solvi independently invented soda ash and obtained a patent. Because the protection of technical secrets has not been widely used, it only started to break through in the United States in the 1920s. In particular, a famous chemical expert in China, Hou Zai 1932, published the book "The Manufacture of Soda Alkali", which was kept secret for 70 years, and Su Wei's method was made public. Hou He 19 .39- 1942 also established Hou Shi caustic soda process, and established a pilot plant in Sichuan. 1952 Dalian chemical plant established a joint soda production workshop. The "NA method" introduced by Asahi Glass Company in Japan is essentially a compromise method between soda and ammonia. The ratio of soda ash to ammonium chloride can be adjusted at will.