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Phosphoryl chloride (commonly called phosphorus oxychloride) is a colourless liquid with the formula P O Cl 3.It hydrolyses in moist air releasing phosphoric acid and fumes of hydrogen chloride.
The number indicates the degree of oxidation of each element caused by molecular bonding. In ionic compounds, the oxidation numbers are the same as the element's ionic charge. Thus for KCl, potassium is assigned +1 and chlorine is assigned -1. [4] The complete set of rules for assigning oxidation numbers are discussed in the following sections.
Heat capacity, c p? J/(mol K) Liquid properties Std enthalpy change of formation, Δ f H o liquid: −597.0 kJ/mol Standard molar entropy, S o liquid? J/(mol K) Heat capacity, c p? J/(mol K) Gas properties Std enthalpy change of formation, Δ f H o gas: −592.0 kJ/mol Std Gibbs' free energy change of formation, Δ f G o gas: −545.2 kJ/mol ...
See also: oxidation states in {{infobox element}} [ edit ] The oxidation states are also maintained in articles of the elements (of course), and systematically in the table {{ Infobox element/symbol-to-oxidation-state }}
The general formula of a phosphoric acid is H n+2−2x P n O 3n+1−x, where n is the number of phosphorus atoms and x is the number of fundamental cycles in the molecule's structure, between 0 and n + 2 / 2 . Pyrophosphate anion. Trimethyl orthophosphate.
It is especially renowned for the conversion of C=O groups to CCl 2 groups. [15] For example, benzophenone and phosphorus pentachloride react to give the diphenyldichloromethane: [16] (C 6 H 5) 2 CO + PCl 5 → (C 6 H 5) 2 CCl 2 + POCl 3. The electrophilic character of PCl 5 is highlighted by its reaction with styrene to give, after hydrolysis ...
Retrieved from "https://en.wikipedia.org/w/index.php?title=Oxidation_numbers&oldid=562433550"This page was last edited on 1 July 2013, at 18:55 (UTC) (UTC)
Charge carrier density, also known as carrier concentration, denotes the number of charge carriers per volume. In SI units, it is measured in m −3. As with any density, in principle it can depend on position. However, usually carrier concentration is given as a single number, and represents the average carrier density over the whole material.