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Phosphate ion (PO₄³⁻)

Phosphate ion (PO₄³⁻)

A compound ion formed when a phosphoric acid molecule releases a proton.

Chemistry

Keywords

phosphate ion, acidic residue ion, anion, ion, compound ion, phosphoric acid, phosphates, trisodium phosphate, superphosphate, RNA, DNA, inorganic chemistry, chemistry

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Phosphate ion PO₄³⁻

Information

Molar mass: 94.9 g/mol

Shape: regular tetrahedron

Bond angle: 109.5°

Properties

Phosphate ions carry a formal charge of -3 and are bound by covalent bonds. The pi bonds of the ion are delocalised. It forms salts with metallic and ammonium ions. Only ammonium and alkali metal phosphates dissolve well in water.

Occurrence and production

The phosphate ion is formed from phosphoric acid through the dissociation of three protons. It occurs in soil and certain minerals.

Uses

It is an important component in fertilisers. The manufacturing process of superphosphate consists of making tricalcium phosphate soluble by adding sulphuric acid and then adding gypsum powder. Trisodium phosphate is used in softening water.

Space-filling

Narration

Related items

Phosphoric acid (H₃PO₄)

It is also used as a food additive, limescale and rust remover.

Red phosphorus

One of the allotropes of phosphorus.

White phosphorus (P₄)

One of the allotropes of phosphorus.

2-deoxy-beta-D-ribose (C₅H₁₀O₄)

A component of DNA, it contains one less hydroxyl group than β-D-ribose.

Phosphorus pentoxide (P₂O₅)

A compound formed as white smoke during the combustion of phosphorus.

ADP, ATP

ATP is the main source of energy for cells.

Beta-D-ribose (C₅H₁₀O₅)

A crystalline compound found in nucleic acids, coenzymes, nucleotides and nucleosides.

Coenzyme A

An acyl-carrier coenzyme taking part in both anabolic and catabolic processes.

DNA

Carrier of genetic information in cells.

NAD⁺, NADP⁺, NADPH

NAD⁺ is a coenzyme that plays an important role mainly in catabolic processes, while NADP is important in anabolic processes as hydrogen carriers.

Phosphorus trichloride (PCl₃)

Colourless liquid that gives off smoke in moist air.

RNA

A polynucleotid made up of phosphoric acid, ribose, and nucleobases (cytosine, uracil, adenine and guanine).

The phosphorus cycle

The phosphorus cycle describes the movement of phosphorus through the lithosphere, hydrosphere, and biosphere.

Permanganate ion (MnO₄⁻)

Potassium permanganate is used as a disinfectant.

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