Phosphoric acid, chemical formula
Phosphoric acid, the compound is quite significant in "chemistry", and the following is described as "Ruogan" chemical formula.

First, phosphoric acid, its chemical formula is\ (H_ {3} PO_ {3}\). Here, the phosphorus element is in the state of\ (+ 3\) valence. Phosphoric acid, having a certain reductive property, its molecular structure, containing two hydroxyl groups, can occur and react with bases.

Second, positive, phosphoric acid, usually called phosphoric acid, chemical formula, is\ (H_ {3} PO_ {4}\). Phosphorus, element, valence state, is\ (+ 5\) valence. Positive phosphoric acid, is a medium and strong acid, in aqueous solution, can be ionized in steps, common in chemical industry, production, such as preparation, phosphorus fertilizer, etc.

And, there is pyrophosphoric acid, chemical formula, is\ (H_ {4} P_ {2} O_ {7}\). It can be regarded as the removal of two phosphoric acid molecules and one molecule of water. Pyrophosphoric acid, more acidic than orthophosphoric acid slightly, strong, in some, chemical, reaction, as an acidic medium or, participation, condensation, reaction.

partial, phosphoric acid, its general formula, can be expressed, is\ ((HPO_ {3}) _ {n}\), when\ (n = 1\), the chemical formula is\ (HPO_ {3}\). Partial phosphoric acid has strong dehydration properties and can react with many substances.

In summary, the upper, sub, phosphoric acid\ (H_ {3} PO_ {3}\), positive, phosphoric acid\ (H_ {3} PO_ {4}\), pyrophosphoric acid\ (H_ {4} P_ {2} O_ {7}\), partial, phosphoric acid\ ((HPO_ {3}) _ {n}\), etc., are all phosphoric acid, compound-like compounds, the main ones, each with characteristics, have different in chemistry, and related fields Therefore, use the road.