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Disulfuric acid

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Identification
Molecular formula
H2S2O7
CAS number
8014-95-7
IUPAC name
disulfuric acid
State
State

At room temperature, disulfuric acid is typically a liquid. It can, however, solidify at lower temperatures.

Melting point (Celsius)
36.00
Melting point (Kelvin)
309.00
Boiling point (Celsius)
330.00
Boiling point (Kelvin)
603.00
General information
Molecular weight
178.13g/mol
Molar mass
178.1300g/mol
Density
2.1000g/cm3
Appearence

Disulfuric acid, also known as oleum, is a colorless to slightly yellow, oily liquid. It is hygroscopic and often appears fuming in the presence of moisture, emitting corrosive acidic vapors.

Comment on solubility

Solubility of Disulfuric Acid

Disulfuric acid, with the chemical formula H2S2O7, is known for its strong acidic properties and unique solubility characteristics.

Key Points About Solubility:

  • Disulfuric acid is highly soluble in water.
  • When dissolved, it forms a strong acid solution that can significantly alter the pH of the water.
  • Due to its hygroscopic nature, disulfuric acid readily absorbs moisture from the environment, which can enhance its solubility.

The solubility can be summarized as follows:

  • Disulfuric acid exhibits complete dissolution in aqueous solutions.
  • It reacts exothermically when mixed with water, releasing heat.
  • It is important to add water to disulfuric acid and not the other way around to prevent violent reactions.

In conclusion, the solubility of disulfuric acid in water is a fundamental aspect that influences its applications and handling. Understanding its solubility behavior is crucial for safe and effective use in various chemical processes.

Interesting facts

Interesting Facts about Disulfuric Acid

Disulfuric acid, also known as oleum, is a fascinating chemical compound primarily used in the production of sulfuric acid and as a strong oxidizing agent. Here are some engaging points regarding this intriguing compound:

  • Industrial Importance: Disulfuric acid plays a crucial role in the chemical industry, particularly in the manufacture of H2SO4 (sulfuric acid), which is one of the most widely produced chemicals in the world.
  • Concentration and Reactivity: It exists in concentrated forms, often appearing as a thick, oily liquid. Its highly reactive nature makes it a significant player in various chemical reactions.
  • Pungent Odor: The compound has a strong, acrid smell due to the presence of free sulfur trioxide. This odor can be quite pungent and serves as a warning sign of its hazardous nature.
  • Environmental Considerations: The use and disposal of disulfuric acid must be managed carefully to prevent environmental damage, particularly as it can contribute to acid rain.
  • Safety Precautions: When handling disulfuric acid, safety is paramount. Protective gear such as gloves, goggles, and lab coats should always be worn to prevent chemical burns or inhalation of toxic fumes.

In addition to these points, disulfuric acid showcases the wonders of chemistry through its unique properties and applications. It serves as a reminder of both the power and responsibility that comes with working in the field of chemistry.

Synonyms
Dithionic acid
14970-71-9
hypodisulfuric acid
H2S2O6
9MP5KH5623
CHEBI:29208
DTXSID50164368
bis(hydroxidodioxidosulfur)(S--S)
[(HO)(O)2SS(O)2(OH)]
1,4-dihydrido-2,2,3,3-tetraoxido-1,4-dioxy-2,3-disulfy-[4]catena
((HO)(O)2SS(O)2(OH))
1,4-dihydrido-2,2,3,3-tetraoxido-1,4-dioxy-2,3-disulfy-(4)catena
DTXCID9086859
SCHEMBL56669
UNII-9MP5KH5623
Q2410244