Telluric acid: Difference between revisions

Latest revision as of 12:08, 15 February 2025

Chemical compound

Telluric acid is a chemical compound with the formula H_TeO_. It is a weak acid and is the oxyanion of tellurium. Telluric acid is a colorless solid that is soluble in water and forms a variety of salts known as tellurates.

Structure and properties[edit]

Telluric acid is a tetrahedral molecule, similar in structure to sulfuric acid and selenium compounds. The central tellurium atom is bonded to four oxygen atoms, forming a tetrahedral geometry. The chemical formula can be represented as Te(OH)_, indicating the presence of hydroxyl groups.

Telluric acid is a weak acid, meaning it does not completely dissociate in water. It can form two types of salts: normal tellurates, which contain the TeO___ ion, and hydrogen tellurates, which contain the HTeO__ ion.

Preparation[edit]

Telluric acid can be prepared by the oxidation of tellurium dioxide (TeO_) with strong oxidizing agents such as hydrogen peroxide (H_O_) or nitric acid (HNO_). The reaction with hydrogen peroxide is as follows:

TeO_ + 2 H_O_ _ H_TeO_ + H_O

Uses[edit]

Telluric acid is used in the preparation of tellurate salts, which have applications in analytical chemistry and material science. It is also used as an oxidizing agent in various chemical reactions.

Safety[edit]

Telluric acid is considered to be a hazardous substance. It can cause irritation to the skin, eyes, and respiratory tract. Proper safety precautions should be taken when handling this compound, including the use of personal protective equipment such as gloves and goggles.

Related pages[edit]

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-{{png-image}}
+{{DISPLAYTITLE:Telluric acid}}
-'''Telluric acid''' is a chemical compound with the formula Te(OH)_6. It is a white crystalline solid that is soluble in water, producing a mildly acidic solution. Telluric acid is one of the most important [[tellurium]] compounds and serves as a precursor to many other tellurium compounds.
+{{Short description|Chemical compound}}
+[[File:Telluric_acid.svg|thumb|right|Structural formula of telluric acid]]
-==Properties==
+'''Telluric acid''' is a chemical compound with the formula H_TeO_. It is a [[weak acid]] and is the [[oxyanion]] of [[tellurium]]. Telluric acid is a [[colorless]] solid that is soluble in water and forms a variety of salts known as tellurates.
-Telluric acid is a [[hexahydrate]] of tellurium, and its structure consists of TeO_6 octahedra with each tellurium atom being surrounded by six oxygen atoms. This structure is somewhat similar to that of [[sulfuric acid]], H_2SO_4, and [[selenic acid]], H_2SeO_4, reflecting the position of tellurium in the [[chalcogen]] group of the [[periodic table]]. However, unlike these acids, telluric acid is less acidic and has weaker oxidizing properties.
-==Synthesis==
+==Structure and properties==
-Telluric acid can be synthesized by oxidizing tellurium or [[tellurium dioxide]] (TeO_2) with [[nitric acid]] (HNO_3) or [[hydrogen peroxide]] (H_2O_2). The reaction with hydrogen peroxide is particularly efficient and yields telluric acid directly:
+Telluric acid is a [[tetrahedral]] molecule, similar in structure to [[sulfuric acid]] and [[selenium]] compounds. The central tellurium atom is bonded to four oxygen atoms, forming a tetrahedral geometry. The chemical formula can be represented as Te(OH)_, indicating the presence of hydroxyl groups.
-\[ \text{TeO}_2 + \text{H}_2\text{O}_2 \rightarrow \text{Te(OH)}_6 \]
-==Applications==
+Telluric acid is a weak acid, meaning it does not completely dissociate in water. It can form two types of salts: normal tellurates, which contain the TeO___ ion, and hydrogen tellurates, which contain the HTeO__ ion.
-While telluric acid itself is not widely used in industrial applications, it is an important starting material for the synthesis of other tellurium compounds. For example, it can be used to prepare [[tellurates]], the salts of telluric acid, by neutralization with bases. These tellurates are used in some electrochemical processes and in the glass industry to impart unique properties to glass, such as improved resistance to acids and alkalis.
+==Preparation==
+Telluric acid can be prepared by the oxidation of [[tellurium dioxide]] (TeO_) with strong oxidizing agents such as [[hydrogen peroxide]] (H_O_) or [[nitric acid]] (HNO_). The reaction with hydrogen peroxide is as follows:
+: TeO_ + 2 H_O_ _ H_TeO_ + H_O
+==Uses==
+Telluric acid is used in the preparation of tellurate salts, which have applications in [[analytical chemistry]] and [[material science]]. It is also used as an oxidizing agent in various chemical reactions.
 ==Safety==
-Telluric acid, like many tellurium compounds, is considered to be of low toxicity. However, it should be handled with care to avoid ingestion, inhalation, or skin contact, as it can cause irritation and other adverse health effects. Proper [[personal protective equipment]] (PPE) should be used when handling telluric acid or its solutions.
+Telluric acid is considered to be a hazardous substance. It can cause irritation to the skin, eyes, and respiratory tract. Proper safety precautions should be taken when handling this compound, including the use of [[personal protective equipment]] such as gloves and goggles.
+==Related pages==
+* [[Tellurium]]
+* [[Sulfuric acid]]
+* [[Selenium]]
+* [[Oxidizing agent]]
-[[Category:Chemical compounds]]
+[[Category:Acids]]
 [[Category:Tellurium compounds]]
-{{chemistry-stub}}
+[[Category:Oxidizing agents]]