phosphorus common compounds

The amount of phosphorus present in any organic compound is determined by Carius metho..

1) Some amount of phosphorus is returned to earth in the form of birds excreta - Guano deposits (excreta of marine birds) and dead fish (around 60,000 tonnes which is less than 0.5% of phosphorus discharged from rivers). 2) Death and decay of organisms and decomposition of orga..

Occurrence and Uses of Phosphorus - Phosphorus is widely distributed in nature. It does not occur in free state since it can be very easily oxidised. It is usually present in rocks in the combined state as phosphates. The main phosphate rocks are: Phosphorite: Ca 3 (PO 4 ) 2 Flu..

. As PBr 3 and PI 3 , are not very stable compounds, they are prepared in situ by the action of red phosphorus on Br 2 , or I 2 , as: This method is preferred than other methods because both the products of the reaction (SO 2 and HCl) are gases and can easily escape leaving behi..

>) and potassium nitrite (KNO 2 ), carbon dioxide (CO 2 ) and carbon monoxide (CO). The properties of compounds are absolutely different from the properties of the elements that constitute the compound. For instance, hydrogen is combustible and oxygen is a supporter of combustio..

Carbon compounds are of two types: inorganic and organic. The compounds that have a mineral origin fall under the category of inorganic compounds. The compounds having plant or animal origin are classified as organic compounds. Lavoisier showe..

Introduction - Origin of Organic Chemistry Carbon compounds are of two types: inorganic and organic. The compounds that have a mineral origin fall under the category of inorganic compounds. The compounds having plant or animal origin are classified as organic..

All pure compounds are differentiated from other compounds by the characteristic properties they possess. Properties like melting point, boiling point and refractive index are generally used as the criteria for checking the purity of an organic compound. For example, ..

This method of nomenclature was used before 1892. In this system of nomenclature, the compounds were named on the basis of their history, such as source of origin et..