Tellurous acid

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
Tellurous acid
Names
IUPAC name
Tellurous acid
Other names
Tellurium dioxide hydrate, tellurium(IV) oxide hydrate
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.030.145
PubChem {{{value}}}
SMILES {{{value}}}
Properties
H2TeO3
Molar mass 177.616 grams
Appearance colorless crystals
Density ~ 3 g/cm3
Boiling point decomp.
negligible
Acidity (pKa) pKa(1) = 2.48, pKa(2) = 7.70
Structure
unknown
pyramidal at Te
Related compounds
Other anions Selenous acid
Sulfurous acid
Other cations Sodium tellurite
Related compounds Telluric acid
Selenic acid
Sulfuric acid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Tellurous acid is a chemical compound. It is also an acid. Its chemical formula is H2TeO3. It contains hydrogen and tellurite ions. It can be made by reacting tellurium dioxide with water. It is not made as easily as telluric acid.

It is a weak oxidizing agent and a weak reducing agent. It easily turns back into tellurium dioxide and water. It is a weak acid. It reacts with bases to make tellurites.

Related pages[change | change source]