Tellurous acid

Dihydrogentrioxotellurat

White solid

Fixed

3.05 g · cm -3

Very slightly soluble in water

Template: Infobox chemical / molecular formula search available

Tellurous acid is an inorganic chemical compound of tellurium.

Production and representation

Tellurous acid can be obtained by reaction of a potassium tellurite solution with dilute nitric acid.

It is also possible the representation is by the reaction of tellurium tetrachloride Tellurdichlorid or with water.

Properties

Tellurous acid is a white, amorphous solid of something changing composition, the water content often lies below the formula H2TeO3. She loses in the dry state water, but can be kept under water for several days unchanged. When heating takes place above room temperature far-reaching elimination of water and conversion to tellurium dioxide instead. The compound is weakly amphoteric and reacts with bases ( to Telluriten ) and strong acids.