Ad
related to: hydrochloric acid discovery process definition
Search results
Results From The WOW.Com Content Network
Hydrochloric acid is a strong inorganic acid that is used in many industrial processes such as refining metal. The application often determines the required product quality. [25] Hydrogen chloride, not hydrochloric acid, is used more widely in industrial organic chemistry, e.g. for vinyl chloride and dichloroethane. [8]
After the discovery in the late sixteenth century of the process by which unmixed hydrochloric acid can be prepared, [24] it was recognized that this new acid (then known as spirit of salt or acidum salis) released vaporous hydrogen chloride, which was called marine acid air.
[6] [d] The preparation of aqua regia by directly mixing hydrochloric acid with nitric acid only became possible after the discovery in the late sixteenth century of the process by which free hydrochloric acid can be produced. [8] The fox in Basil Valentine's Third Key represents aqua regia, Musaeum Hermeticum, 1678
The Leblanc process plants were quite damaging to the local environment. The process of generating salt cake from salt and sulfuric acid released hydrochloric acid gas, and because this acid was industrially useless in the early 19th century, it was simply vented into the atmosphere. Also, an insoluble smelly solid waste was produced.
The Deacon process, invented by Henry Deacon, is a process used during the manufacture of alkalis (the initial end product was sodium carbonate) by the Leblanc process. Hydrogen chloride gas was converted to chlorine gas, which was then used to manufacture a commercially valuable bleaching powder , and at the same time the emission of waste ...
The Leblanc process, which was invented by Nicolas Leblanc around 1790, begins with the decomposition of sodium chloride by sulfuric acid, by which sodium sulfate and hydrochloric acid are produced. The sodium sulfate is afterwards fired with calcium carbonate and coal. Sodium carbonate can be extracted from this mixture by washing the mixture ...
He was the first to produce concentrated hydrochloric acid in 1625 by combining sulfuric acid and table salt. He also made an improved process for the manufacture of nitric acid in 1648 by heating potassium nitrate with concentrated sulfuric acid.
Pyrohydrolysis of hydrochloric spent pickle liquor from carbon steel pickling lines is a hydrometallurgical reaction which takes place according to the following chemical formulae: 4 FeCl 2 + 4 H 2 O + O 2 = 8 HCl + 2 Fe 2 O 3. 2 FeCl 3 + 3 H 2 O = 6 HCl + Fe 2 O 3. The process is an inversion of the chemical descaling (pickling) process.