Uses of Iodoform-freons Iodoform is antiseptic and it is particularly used for the dressing of the wounds. Iodoform is crystalline solid of pale-yellow color and it has medicine like pungent odor. It liberates the iodine so it has the antiseptic properties. It has a sweetish taste and is occasionally, used as a disinfectant on a … Read more
Uses of Tetrachloromethane In past tetrachloromethane has been used as fire extinguisher as it extinguishes the flames and prevents the fire. Its vaporization causes the combustion reaction to stop. Tetrachloromethane without the presence of hydrogen atom is an ideal choice for NMR spectroscopy and is the use-able option for the infrared spectroscopy due to its … Read more
Phenols are organic hydrocarbon compounds with a hydroxyl group directly attached to an aromatic hydrocarbon compound like Benzene Ring. Phenols are also termed as Phenolic compounds. The molecular formula of phenols is C6H5O6. The synthesis of Phenols is Natural as well as artificial. Nomenclature Phenol is the common name of the C6H5O6 compound. By definition, … Read more
Phenols are organic hydrocarbon compounds with a hydroxyl group directly attached to an aromatic hydrocarbon compound like Benzene Ring. Phenols are also termed as Phenolic compounds. The molecular formula of phenols is C6H5O6. The common name of phenols is also known as Benzol. Preparations of Phenol The preparation of Phenol is either a natural … Read more
p-Block Elements: Group 16 Oxidation states The elements of the oxygen family, group 16 appear in a number of oxidation states. The most common oxidation state is -2 because the general electron configuration is ns2np4. Chalcogens assume other oxidations state also including +2, +4 and +6. The stability of -2 oxidation state reduces as the … Read more
p-Block Elements: Group 16 Electronic configuration The elements of group 16 have 6 electrons in their outermost valence orbital which accounts for similar chemical properties of the elements. The p sublevel always fills after the s sublevel of a given principal energy level. Likewise, the general electron configuration of group 16 elements is ns2np4. Their … Read more
General Introduction The group 16 family is named after its first member, oxygen; however, the individual elements vary quite widely owing to the changing metallic properties going down the group. These elements are also called chalcogens that are derived from the association of sulphides and oxides in brass congeners (ore-forming) with copper. They are found … Read more
p-Block Elements: Group 15 Phosphine, halides PCl3, PCl5 and oxoacids Phosphine is produced by the reacting calcium phosphide with water or dilutes HCl. Ca3P2 + 6H2O3Ca(OH)2 + 2PH3 Ca3P2 + 6HCl 3CaCl2 + 2PH3 At laboratory scale, it is made by heating white phosphorus with concentrated NaOH solution in an inert atmosphere of carbon dioxide … Read more
p-Block Elements: Group 15 Phosphorous: allotropic forms, compounds of phosphorus Phosphorous is used extensively in pyrotechnics, steel making and alloy making while phosphoric acid makes an essential part of fertilizers. Phosphorous is also used in electrode-less plating. Phosphorous is naturally found in three allotropes: White Phosphorus = P4 (tetrahedral) – very reactive Black Phosphorus = … Read more
p-Block Elements: Group 15 Oxides of nitrogen Nitrogen forms six stable oxides at different oxidation states ranging from +1 to +5.Oxides with higher oxidation state are more acidic than the ones with lower oxidation state. Lightning stroke is a natural source of producing nitrogen oxide where nitrogen combines with oxygen in a lightning arc. Many … Read more