sulphurous acid - traduzione in greco
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sulphurous acid - traduzione in greco

CHEMICAL COMPOUND
Sulphurous acid; Sulphurous Acid; H2SO3; HS2O3; Sulfurous Acid

sulphurous acid         
θειώδες οξύ
sulfurous acid         
θειώδες οξύ
sulphuric acid         
  • An experiment that demonstrates the dehydration properties of concentrated sulfuric acid. When concentrated sulfuric acid comes into contact with [[sucrose]], slow carbonification of the sucrose takes place. The reaction is accompanied by the evolution of gaseous products that contribute to the formation of the foamy carbon pillar that rises above the beaker.
  • Acidic [[drain cleaner]]s usually contain sulfuric acid at a high concentration which turns a piece of [[pH paper]] red and chars it instantly, demonstrating both the strong acidic nature and dehydrating property.
  • An acidic [[drain cleaner]] can be used to dissolve grease, hair and even tissue paper inside water pipes.
  • 250px
  • [[John Dalton]]'s 1808 sulfuric acid molecule shows a central [[sulfur]] atom bonded to three oxygen atoms, or [[sulfur trioxide]], the [[anhydride]] of sulfuric acid.
  • 70px
  • 70px
  • Rio Tinto]] with its highly acidic water
  • D]]F in place of HF. (see text)
  • Nitrile glove exposed to drops of 98% sulfuric acid for 10 minutes
  • Sulfuric acid production in 2000
  • Superficial chemical burn caused by two 98% sulfuric acid splashes (forearm skin)
  • Drops of 98% sulfuric acid char a piece of tissue paper instantly. Carbon is left after the dehydration reaction staining the paper black.
  • Drops of concentrated sulfuric acid rapidly decompose a piece of cotton towel by dehydration.
θειικό βιτριόλι, θειικό οξύ, βιτριόλι

Definizione

sulphurous acid
¦ noun Chemistry an unstable weak acid formed when sulphur dioxide dissolves in water. [H2SO3.]

Wikipedia

Sulfurous acid

Sulfurous acid (United Kingdom spelling: sulphurous acid, also known as sulfuric(IV) acid, sulphuric(IV) acid (UK), thionic acid (since it has a thionyl group attached to 2 hydroxy groups)) is the chemical compound with the formula H2SO3.

Raman spectra of solutions of sulfur dioxide in water show only signals due to the SO2 molecule and the bisulfite ion, HSO3. The intensities of the signals are consistent with the following equilibrium:

17O NMR spectroscopy provided evidence that solutions of sulfurous acid and protonated sulfites contain a mixture of isomers, which is in equilibrium:

Attempts to concentrate the solutions of sulfurous acid simply reverses the equilibrium, producing sulfur dioxide and water vapor. A clathrate with the formula 4SO2·23H2O has been crystallised. It decomposes above 7 °C.