Selenic Acid Formula

Selenic Acid Formula

Selenic acid is an inorganic compound and Selenic Acid Formula is H2SeO4. Selenic Acid Formula is an oxoacid of selenium which is a colourless compound. The structure of the Selenic Acid Formula is much better described as O2Se(OH)4.

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Preparation of Selenic Acid

Selenic Acid Formula is usually prepared by oxidising much lower oxidation states of selenium compounds. The oxidation of selenium dioxide with hydrogen peroxide is an excellent example. On the other hand, selenious acid may also be used to prepare Selenic Acid Formula by oxidising it with halogens like chlorine or bromine, though potassium permanganate may also be used. However, the use of chlorine or bromine for working as an oxidising agent may also produce acids like hydrochloric or hydrobromic acid.

Selenic Acid Properties

The molecular weight of the Selenic Acid Formula is 144.98u. The hydrogen bond donor count is 2 while the hydrogen bond acceptor count is four. The covalently bonded unit count of the Selenic Acid Formula is one. The heavy atom count of the Selenic Acid Formula is five.

Physical Properties of Selenic Acid

Selenic Acid Formula can originally be classified as a white crystalline solid. Selenic acid is also considered to be very corrosive to skin, eyes and mucous membranes. Selenic acid is also corrosive to metals. Selenic acid is considered toxic by skin absorption and by ingestion.

Chemical Properties of Selenic Acid

This compound is considered to decompose at approximately 260-degree celsius. Selenic acid is soluble in water, but insoluble in ammonia, though it is soluble in sulphuric acid. The density of selenic acid in the solid state at 15 degrees celsius is 2.951 and the density of Selenic acid in the liquid state at 15 degrees celsius is 2.609. It also emits toxic fumes of selenium on decomposition. Formic acid, oxalic acid, malonic acid, pyruvic acid, hydroxylamine hydrochloride, acetyl chloride, hydrogen sulphide, hydrobromic acid, hydriodic acid, hydroxylamine hydrochloride, phenylhydrazine, and various metals reduce this compound called selenic acid. It is a strong oxidising agent.

Selenic Acid Structure

According to VSEPR theory, the molecule is tetrahedral. Se-O bonds have a length of 161 pm.  It forms an orthorhombic structure when it crystallises in the solid state. It has a 2D structure but the 3D conformer structure was disallowed because of the MMFF94 unsupported element.

Selenic Acid Uses

Selenic acid is used as the best specialised oxidising agent. It is used in various activities such as metal refining, rust removal, fertiliser manufacture and photography. It can have various other uses like metal, drain and toilet cleaner.

Sample Questions

Some sample questions about selenic acid are:

  1. Is it toxic for people to consume selenic acid?

Yes. Selenic acid is toxic for people to consume as it will affect their health negatively. It can irritate and burn human skin and ears. It is hazardous to their health as it produces selenium when burned.

2. Can it be used as an oxidising agent?

Yes. It can be used as an oxidising agent. It has a major application as a strong oxidising agent.

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