Preparation of Hyposulfurous acid

  • Hyposulfurous acid can be found in the gas phase. It is found as an intermediate acid by the oxidization of Hydrogen Sulfide in the natural environment.
  • It can also be prepared by ultraviolet irradiation of a mixture consisting of solid H2S and H2O. This process takes place in circumstellar disks or comets.
  • It can also be prepared by conducting ultraviolet irradiation on solid sulfur dioxide and hydrogen sulfide. 

Hyposulfurous Acid Formula – Structure, Properties, Uses, Sample Questions

Hyposulfurous acid contains two Hydrogen (H), one sulfur (S), and two Oxygen (O) atoms. Hydrogen (H) is a chemical element that has atomic number 1 in the periodic table. Sulfur (S) is a chemical element with the atomic number 16 in the periodic table. Oxygen (O) is the chemical element with atomic number 8 in the periodic table. Let’s discuss Hyposulfurous acid.

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Hyposulfurous Acid Formula

Hyposulfurous acid contains two Hydrogen (H), one sulfur (S), and two Oxygen (O) atoms. It is an unstable oxoacid of Sulfur (S). It is an intermediate oxidation state between dithionous acid and hydrogen sulfide. It has two Hydroxy groups (OH), which are attached to the Sulfur (S) atom. It is also known as Sulfoxylic acid or Sulfur Dihydroxide or dihydroxidosulfur or sulfanediol. The chemical formula of Hyposulfurous acid is H2SO2....

Structure of Hyposulfurous acid

It contains two Hydroxy groups (OH), which are attached to the Sulfur (S) atom. In which sulfur has a +2 oxidation state....

Preparation of Hyposulfurous acid

Hyposulfurous acid can be found in the gas phase. It is found as an intermediate acid by the oxidization of Hydrogen Sulfide in the natural environment. It can also be prepared by ultraviolet irradiation of a mixture consisting of solid H2S and H2O. This process takes place in circumstellar disks or comets. It can also be prepared by conducting ultraviolet irradiation on solid sulfur dioxide and hydrogen sulfide....

Physical Properties of Hyposulfurous acid

The Molecular weight of Hyposulfurous acid is 66.07 g/mol. It has Bisulfoxylate (SO2H–) and a conjugate base. It is an isomer of sulfinic acid. It has a pKa of  7.97....

Chemical Properties of Hyposulfurous acid

Hyposulfurous acid disproportionates into Sulfur (S) and Hydrogensulfite (HSO3–), which in turn reacts to form thiosulfate (S2O32-). Hyposulfurous acid is oxidized to sulfur dioxide (SO2), and it forms Diothionite (S2O2-4)....

Uses of Hyposulfurous acid

It is used as a reducing agent. It is used as a bleaching agent, which is used to bleach the pulp of paper. It is used in the dyeing process.  It is used in organic reactions, in which it is used to reduce the Nitro group to the Amino group. It is also used in industrial processes such as Sulfonating agents or Sodium ion sources. It is used in the textile industries and leather industries. It is used in food, photography, and polymer industries....

FAQs on Hyposulfurous acid

Question 1: What happens when Hyposulfurous acid reacts in water with sodium hydroxide?...