Telluric acid

orthotelluric acidTe(OH) 6 H 2 TeO 4 H 6 TeO 6
Telluric acid is a chemical compound with the formula Te(OH) 6.wikipedia
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Tellurate

Orthotelluratetellurate ion
Telluric acid is a weak acid which is dibasic, forming tellurate salts with strong bases and hydrogen tellurate salts with weaker bases or upon hydrolysis of tellurates in water.
Historically the name tellurate was only applied to oxyanions of tellurium with oxidation number +6, formally derived from telluric acid Te(OH) 6, and the name tellurite referred to oxyanions of tellurium with oxidation number +4, formally derived from tellurous acid (HO) 2 TeO and these names are in common use.

Tellurium

Tenative telluriumtelluride
Telluric acid is formed by the oxidation of tellurium or tellurium dioxide with a powerful oxidising agent such as hydrogen peroxide, chromium trioxide or sodium peroxide.
Amorphous tellurium is a black-brown powder prepared by precipitating it from a solution of tellurous acid or telluric acid (Te(OH) 6 ).

Tellurium dioxide

TeO 2 paratellurite(TeO 2 )
Telluric acid is formed by the oxidation of tellurium or tellurium dioxide with a powerful oxidising agent such as hydrogen peroxide, chromium trioxide or sodium peroxide.
It can be oxidized to telluric acid or tellurates.

Tellurium trioxide

TeO 3 tellurium
Strong heating at over 300 °C produces the α- crystalline modification of tellurium trioxide, α-TeO 3.
α-TeO 3 can be prepared by heating orthotelluric acid, Te(OH) 6, at over 300°C.

Chemical compound

compoundcompoundschemical compounds
Telluric acid is a chemical compound with the formula Te(OH) 6.

Chemical formula

molecular formulaformulageneral formula
Telluric acid is a chemical compound with the formula Te(OH) 6.

Acid strength

weak acidstrong acidstrong acids
Telluric acid is a weak acid which is dibasic, forming tellurate salts with strong bases and hydrogen tellurate salts with weaker bases or upon hydrolysis of tellurates in water.

Acid

acidicacidityacids
Telluric acid is a weak acid which is dibasic, forming tellurate salts with strong bases and hydrogen tellurate salts with weaker bases or upon hydrolysis of tellurates in water.

Salt (chemistry)

saltsaltspotassium salt
Telluric acid is a weak acid which is dibasic, forming tellurate salts with strong bases and hydrogen tellurate salts with weaker bases or upon hydrolysis of tellurates in water.

Base (chemistry)

basebasicbases
Telluric acid is a weak acid which is dibasic, forming tellurate salts with strong bases and hydrogen tellurate salts with weaker bases or upon hydrolysis of tellurates in water.

Redox

oxidationoxidizedreduction
Telluric acid is formed by the oxidation of tellurium or tellurium dioxide with a powerful oxidising agent such as hydrogen peroxide, chromium trioxide or sodium peroxide.

Hydrogen peroxide

H 2 O 2 H2O2HO
Telluric acid is formed by the oxidation of tellurium or tellurium dioxide with a powerful oxidising agent such as hydrogen peroxide, chromium trioxide or sodium peroxide.

Chromium trioxide

CrO 3 chromic anhydridechromium(VI) oxide
Telluric acid is formed by the oxidation of tellurium or tellurium dioxide with a powerful oxidising agent such as hydrogen peroxide, chromium trioxide or sodium peroxide.

Sodium peroxide

peroxides of sodiumSodium dioxide
Telluric acid is formed by the oxidation of tellurium or tellurium dioxide with a powerful oxidising agent such as hydrogen peroxide, chromium trioxide or sodium peroxide.

Electrode potential

Cell voltagecell potentialElectrochemical corrosion potential
Crystallization of telluric acid solutions below 10 °C gives Te(OH) 6 .4H 2 O. It is oxidizing, as shown by the electrode potential for the reaction below, although it is kinetically slow in its oxidations.

Diazomethane

methyldiazonium
Reaction with diazomethane gives the hexamethyl ester, Te(OMe) 6.

Sulfuric acid

sulphuric acidsulfuricH 2 SO 4
Metatelluric acid, H 2 TeO 4, the tellurium analogue of sulfuric acid, H 2 SO 4, is unknown.

Tellurous acid

Tellurous acid (H 2 TeO 3 ), containing tellurium in its +4 oxidation state, is known but not well characterised.

Hydrogen telluride

H 2 Tehydrotelluric acidHTe
Hydrogen telluride is an unstable gas that forms hydrotelluric acid upon addition to water.

Chalcogen

group 1616chalcogens
There are many acids containing chalcogens, including sulfuric acid, sulfurous acid, selenic acid, and telluric acid.

Oxyacid

oxoacid2-oxo acid2-oxoacid
However, according to IUPAC's current rules, the prefix ortho- should only be used in names of orthotelluric acid and orthoperiodic acid, and their corresponding anions and salts.

Hydroxide

OHhydroxide ionOH −
Telluric acid is often written with the formula H 2 TeO 4 ·2H 2 O but is better described structurally as Te(OH) 6.

Carlfriesite

Carlfriesite was found to be synthesizable by heating a mixture of CaO, Te(OH) 6 and TeO 2 to 150-240°C with water at the vapor pressure of the system.