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Key People:Georg Brandt...(Show more)Related Topics:oxyacidsulfur dioxideacidsulfationvitriol...(Show more)

sulfuric acid, sulfuric likewise spelled sulphuric (H2SO4), also called oil the vitriol, or hydrogen sulfate, dense, colourless, oily, corrosive liquid; among the many commercially important of all chemicals. Sulfuric mountain is all set industrially by the reaction of water v sulfur trioxide (see sulfur oxide), which consequently is do by chemical mix of sulfur dioxide and also oxygen one of two people by the contact process or the room process. In miscellaneous concentrations the mountain is used in the to produce of fertilizers, pigments, dyes, drugs, explosives, detergents, and also inorganic salts and also acids, and in petroleum refining and metallurgical processes. In among its most familiar applications, sulfuric acid serves together the electrolyte in lead–acid storage batteries.

Pure sulfuric acid has a details gravity of 1.830 at 25 °C (77 °F); that freezes at 10.37 °C (50.7 °F). When heated, the pure acid partially decomposes into water and sulfur trioxide; the last escapes as a vapour till the concentration the the acid falls to 98.3 percent. This mixture of sulfuric acid and water boils at a constant temperature the 338 °C (640 °F) in ~ one setting pressure. Sulfuric acid is typically supplied at concentrations of 78, 93, or 98 percent.



Sulfuric acid is sometimes referred to together the “king the chemicals” due to the fact that it is produced an international in such large quantities. In fact, per...

Due come its affinity because that water, pure anhydrous sulfuric acid does not exist in nature. Volcanic task can an outcome in the production of sulfuric acid, relying on the emissions associated with details volcanoes, and sulfuric acid aerosols from an eruption deserve to persist in the stratosphere for countless years. These aerosols deserve to then reform right into sulfur dioxide (SO2), a ingredient of mountain rain, though volcanic task is a reasonably minor contributor to mountain rainfall.

Sulfuric acid is a very solid acid; in aqueous solutions it ionizes completely to form hydronium ions (H3O+) and also hydrogen sulfate ions (HSO4−). In dilute remedies the hydrogen sulfate ions also dissociate, forming more hydronium ions and sulfate ion (SO42−). In enhancement to being an oxidizing agent, reacting easily at high temperatures with plenty of metals, carbon, sulfur, and also other substances, focused sulfuric mountain is likewise a strong dehydrating agent, combining violently v water; in this capacity, the chars many organic materials, such as wood, paper, or sugar, leaving a carbonaceous residue.


The ax fuming sulfuric acid, or oleum, is used to options of sulfur trioxide in 100 percent sulfuric acid; this solutions, typically containing 20, 40, or 65 percent sulfur trioxide, are provided for the preparation of necessary chemicals.

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