examples of aromatic hydrocarbons

Polynuclear Aromatic Hydrocarbons and their Toxicity - Polynuclear aromatic hydrocarbons are a class of compounds found throughout the environment in the air, in the soil and in the water. They are found naturally in crude oil, coal tar, and coal. They are ma..

Polynuclear aromatic hydrocarbons are a class of compounds found throughout the environment in the air, in the soil and in the water. They are found naturally in crude oil, coal tar, and coal. They are man-made during incomplete combustion of hydrocarbons like co..

Coal is a complex mixture of hydrocarbons. It also contains some organic compounds containing nitrogen and sulphur in small amounts. It can be approximated to the formula (C 3 H 4 ) n..

(i) By ozonolysis of alkenes Alkenes react with ozone to form ozonides which on subsequent reductive cleavage with zinc dust and water or H 2 /Pd give aldehydes, Ketones or a mixture of both depending on the substitution pattern of the alkene. (ii) By hydration of alkynes Ethynes adds water in..

A hydrocarbon is the name given to the mixture of gases caused by the incomplete combustion of fossil fuels. These comprise of paraffins, olefines and aromatics that are emitted from petroleum refineries. Some of these substances are suspected carcinogens, such as the polynucle..

Aromatic compounds are those, which resemble benzene in chemical behavior. These compounds contain alternate double and single bonds in a cyclic structure. They undergo substitution reactions rather than addition reactions. This characteristic behavior is called aromatic charac..

Direct chlorination or bromination of benzene or other aromatic hydrocarbon gives chloroarenes and bromoarenes. These reactions are carried out in the presence of Lewis acids such as ferric or aluminium halides (FeCl 3 , FeBr 3 , AlCl 3 ) in the dark, at ordinary temperatures..

Introduction - The simplest organic compounds are hydrocarbons. All organic compounds can be derived from hydrocarbons by substituting a hydrogen atom with a suitable functional group. Replacing a hydrogen atom by a OH group in a hydrocarbon, gives an alcohol: replacem..

These are compounds containing carbon and hydrogen only. The hydrocarbons involved in air pollution are gases (or those that are volatile) under ordinary conditions. The important sources of hydrocarbons in the natural environment are bacterial decomposition of organic mat..

We have already seen that a candle can continue to burn in chlorine. However if turpentine oil, another hydrocarbon, is sprayed into a jar of chlorine, or if a filter paper dipped in turpentine oil is dropped into a jar of chlorine, the reaction is vigorous. In the second case, the filte..