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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]
[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
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.
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.
It is an electrolytic process using pure gold for the cathode (or titanium as a starter cathode) and chloroauric acid (gold chloride-hydrochloric acid) as the electrolyte; this is made by dissolving gold with chlorine gas in the presence of hydrochloric acid.
The earliest known, full-length opera composed by a Black American, “Morgiane,” will premiere this week in Washington, DC, Maryland and New York more than century after it was completed.
Carl Wilhelm Scheele (German:, Swedish: [ˈɧêːlɛ]; 9 December 1742 – 21 May 1786 [2]) was a German Swedish [3] pharmaceutical chemist.. Scheele discovered oxygen (although Joseph Priestley published his findings first), and identified molybdenum, tungsten, barium, nitrogen, and chlorine, among others.
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