"' Tellurous acid "'is an inorganic compound with the formula H 2 TeO 3.
2.
The tellurium oxides and hydrated oxides form a series of acids, including tellurous acid ( ), orthotelluric acid ( ) and metatelluric acid ( ).
3.
Tellurous acid forms " tellurite " salts containing the anion TeO . Other tellurium cations include, which consists of two fused tellurium rings and the polymeric.
4.
An alternative preparation is to dehydrate tellurous acid, H 2 TeO 3, or to thermally decompose basic tellurium nitrate, Te 2 O 4 . HNO 3 above 400 �C.
5.
In slightly acidic conditions, "'hydrogen tellurite "'ion,, is prevalent; with more acidic conditions tellurous acid, H 2 TeO 3, is prevalent.
6.
An alternative way of writing its formula is ( HO ) 2 TeO . In principle, tellurous acid would form by treatment of tellurium dioxide with water, i . e . hydrolysis.
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