Acids and Bases

How do you form oleum from sulfuric acid?

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2011-05-12 17:16:15
2011-05-12 17:16:15

Dissolve excess Sulfur trioxide in concentrated Sulfuric acid

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Oleum is another name for very pure sulfuric acid (above 98%). Oleum is not a part of sulfuric acid.


Oleum is more stronger acid than Sulfuric acid


The traditional name for fuming sulfuric acid is Oleum. Oleum is used for in water based aerosol coatings. Rust-Oleum has the fuming sulfuric acid in its name and hold many patents on its usage.


The traditional Latin name for fuming sulfuric acid is Oleum. It comes from the Latin word for oil (oleum). It is also called Nordhausen acid.


"Sulfuric acid." If you're looking for an archaic name, "vitriol" or "oil of vitriol." If you are looking for the name of the Industrial concentrated form, it is "Oleum" which is Latin for oil.


By dissolving Sulfur trioxide in concentrated Sulfuric acid


Yes, BUT... Liquid SO3 is HIGHLY reactive and not readily available. Pure SO3 reacts readily (and violently) with water or sulfuric acid. To manufacture sulfuric acid, dilute gaseous SO3 is absorbed in sulfuric acid to increase the concentration of the acid. 100% sulfuric acid can still absorb more SO3. When extra SO3 is dissolved in 100% H2SO4 (sulfuric acid) the solution is called oleum or fuming sulfuric acid. In general, oleum is used when free SO3 is required.


Battery AcidSome other names:vitrioloil of vitriololeum


'battery acid'....ay..hows thatSome other names:vitrioloil of vitriololeum


Oleum or fuming sulfuric acid refers to a solution of various compositions of sulfur trioxide (SO3) in sulfuric acid (H2SO4), which can also be described by the formula H2SO4.xSO3 where x is defined as the molar free sulfur trioxide content.As being a mixture it does not have a chemical structural formula.


Dodycyle benzene is reacted with oleum or sulfuric acid in slow addition and strong agittation manner



Oleum usually weight twice the water, density in SI varies between 1.9 - 2.0 kg/L. For Imperial unit it is approximately 16 Pound/Gallon. I suggest to verify concentration of Oleum for the exact density.


Because the reaction is extremely exothermic and can produce an acid mist, which is dangerous and difficult to condense. It dissolves more quietly in concentrated sulfuric acid to form oleum, which can be diluted.


Sulfuric acid (sulphuric in the UK) is obtained from sulfur (sulphur in the UK), a yellow mineral found in large quantities in volcanic regions. First the sulfur is melted and burned to form sulfur dioxide gas. This is passed with further oxygen over a catalyst of Vanadium oxide to speed up the reaction whereby a gas called sulfur trioxide is formed. Sulfur trioxide will react directly with water to produce sulfuric acid but as the reaction is so violent, the sulfur trioxide is dissolved first in some already made sulphuric acid. The resulting oily, fuming, corrosive liquid is called 'fuming sulfuric acid' or 'oleum'. This oleum is then reacted with water to form a double quantity of sulfuric acid, one lot being product required and the other sent back to the stage in the process where the sulfur trioxide is re-dissolved in it.


Acid rain forms when oxygen and nitrogen in the air mixes with sulfur oxides to form sulfuric acid, and that is the result


Sulfuric acid gives away two protons to form the sulfate ion. Therefore it is a diprotic acid.


Calcium phosphate reacts with sulfuric acid to form calcium sulfate and phosphoric acid.


Magnesium oxalate will react with sulfuric acid to form magnesium sulfate and oxalic acid.


Sodium chloride and sulfuric acid doesn't react.


"Battery Acid" nearly always refers to Sulfuric Acid.Most sulfuric acid is made either by way of the Contact Process or (in much smaller quantities) the Wet Sulfuric Acid process.In the Contact Process sulfur is first burned burned to produce sulfur dioxide. The sulfur dioxide is then oxidized to sulfur trioxide using oxygen in the presence of a vanadium(V) oxide catalyst. The sulfur trioxide is absorbed into 97-98% sulfuric acid to form oleum (also known as fuming sulfuric acid). The oleum is then diluted with water to form concentrated sulfuric acid. Dissolving the sulfur trioxide into sulfuric acid and then diluting to GET sulfuric acid sounds strange but directly dissolving the sulfur trioxide into liquid water is so exothermic that it creates boils the water and creates an extremely corrosive aerosol that is difficult to collect rather than a liquid.In the Wet Sulfuric Acid process, sulfur contained in a fuel or hydrogen sulfide contained in the fuel is burned with the fuel creating sulfur dioxide gas. As with the Contact Process, the sulfur dioxide is reacted with oxygen over vanadium(V) oxide catalyst to produce sulfur trioxide. The next couple of steps differ from the contact process. The sulfur trioxide is hydrated with water in the gas phase to form sulfuric acid gas. This gas is then condensed to form highly concentrated sulfuric acid. One of the benefits of this is that clearing the sulfur from the exhaust gases of the burning fuel reduces air pollution while simultaneously producing a product that can be sold to offset the cost of the air pollution control measures.


Yes, water and concentrated sulfuric acid can be mixed together to form dilute sulfuric acid solution.


Yes. Burning sulfur in air will produce sulfur dioxide, which can then react with water to form sulfuric acid.


Fuming sulfuric acid is sulfuric acid that contains added sulfur trioxide,so3.


Sulfuric acid and Calcium hydroxide (or any Calcium salt of a Weaker acid than Sulfuric acid)



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