Phosphoric acid is a chemical compound consisting of phosphorus, oxygen and hydrogen atoms. The chemical formula is H₃PO₄. This compound can be found naturally in some phosphate minerals and can also be produced synthetically. Phosphoric acid generally comes in the form of an aqueous solution, and has strong acidic properties.
Phosphoric acid is included in the strong acid category. This means this compound can release hydrogen ions (H⁺) efficiently when dissolved in water.
Phosphoric acid dissolves well in water, forming solutions that are often used in various industrial processes.
Phosphoric acid is reactive towards several metals, especially alkali metals and alkaline earth metals.
Uses or applications of Phosphoric Acid:
Phosphoric acid can be used to treat iron, especially to clean rust. Phosphoric acid has corrosive properties which can penetrate the rust layer on the surface of iron and form iron phosphate compounds which protect the metal from further corrosion.
Fertilizer Industry: As a source of phosphorus, phosphoric acid is used in the manufacture of phosphate fertilizers. Phosphorus is an essential element for plant growth.
Electronics Industry: Phosphoric acid is used in the metal etching process in the manufacture of printed circuit boards (PCBs).
Industrial Cleaning: Due to its acidic properties, phosphoric acid is also used in industrial cleaning formulations, including rust removers.
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