Samantha+Henry+Reaction+Wiki

=ETHENE= By:Samantha Henry

Ethene also known as Ethylene is a chemical compound and it's formula is C2H4. Ethene is the simplest form of alkene because it contains a double bond. It is called an unsatured hydrocarbon. Ethene is very important and plays a role in biology as a hormone. A hormone is a chemical messenger that carries a signal from one cell to another through the blood. It is the most produced organic compound in the world. The global production of Ethene exceeded 75 million tons per year in 2005. Ethene has four hydrogen atoms bound to a pair of carbon atoms that are linked by a double bond. All the atoms that make up this compound are coplanar. From 1795 ethene has been reffered to as the oil-making gas because it is combined with chlorine. In 1979 the IUPAC nomenclature rules made an exception for retaining the non-systematic name. The decision was looked over in 1993 which made the correct name to be Ethene. Ethene can be produced in a laboratory by distilling absolute ethanol with an excess of concentrated sulfric acid and washing the sistillate vapor stream in an aqueous solution of sodium hydroxide to remove the sulfur dioxide contaminant. Even though Ethene is a simple compound it's spectrum is known to be one of the most difficult to explain adequately. Ethene is made by cracking hydrocarbons from petroleum and is an important raw material for making other organic chemicals like ethanol. Ethene's melting point is -169.4°C and the boiling point is -103.7°C. Its molar mass is 28.05g/mol and apperance is a colorless gas. Ethene has been used since the ancient Africans who would gash figs in order to stimulate ripening. Also the ancient Chinese would burn incense in closed rooms to enhance the ripening of pears. In 1935 Crocker proposed that ethylene was the plant hormone responsible for fruit ripening as well as inhibition if vegetative tissues. Ethene gas can cause a pleasant odor, euphoria,nausea, hyperglycemia and a variety of psychological effects, blood pressure changes, hypoxia, loss of consciousness, or death. Ethylene is responsible for the specific smell of each kind of flower or fruit. If Humans are exposed to 50% ethylene in air whereby the oxygen availability is decreased to 10%, experience a complete loss of consciousness and may subsequently die due to hypoxia. Hypoxia is a pathological condition in which the body as a whole or regionof the body is deprived of adequate oxygen supply. Hypoxia in which there is complete deprivation of oxygen supply, is referred to as anoxia. Ethylene has been in use as an inhalatory anaesthetic. Anaesthetic is the condition of having the feeling of pain and other sensations blocked. When used as a surgical anaesthetic, it is always administered with oxygen with an increased risk of fire. In those cases it acts as a simple, rapid anaesthetic having a quick recovery. Many geologists and scholars believe that the famous Greek Oracle at Delphi went into her trance-like state as an effect of ethylene rising from ground faults.

__References__ http://www.ausetute.com.au/ethene.html http://www.daviddarling.info/encyclopedia/E/ethene.html [|medical.merriam-webster.com/medical/ethene]