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Which of the free radicals reactions are commercially important?
Wiki User
∙ 16y ago
There are many different free radical chain reactions used in making polymers -- such as nylon and other synthetic materials.
Wiki User
∙ 16y ago
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How do free radicals work in a fire situation?
Free radicals in the air, like smoke from a fire, co2 from buses, gases, anything that causes air irrigation, is a free radical. Free radicals also wear on your skin and can possibly make you look older and take a toll on your skin.
How can detect free radicals by ESRA spectroscopy?
It is possible to detect free radicals by ESR spectroscopy and imaging through the use of nitroxides. ESR stands for Electric Spin Resonance. Nitroxides trap free radicals under the skin during UV irradiation.
How are chlorine free radicals are formed in the upper atmosphere?
Chlorine radicals are formed by CFC's. They deplete the ozone layer.
A organelle that detoxifies free radicals are known as?
Peroxizome.
Will large numbers of radicals within the body increase the risk of coronary heart disease?
Oxygen free radicals will :D
What has the author Alfred William Tickner written?
Alfred William Tickner has written: 'The reactions of free vinyl radicals'
What has the author Keith U Ingold written?
Keith U. Ingold has written: 'Free-radical substitution reactions' -- subject(s): Substitution reactions, Radicals (Chemistry)
How ion makes radicals?
Moses Gomberg (1866-1947), the founder of radical chemistryRadicals (often referred to as free radicals) are atoms, molecules, or ions with unpaired electrons or an open shell configuration. Free radicals may have positive, negative, or zero charge. With some exceptions, these unpaired electrons cause radicals to be highly chemically reactive.Free radicals play an important role in combustion, atmospheric chemistry, polymerization, plasma chemistry, biochemistry, and many other chemical processes. In living organisms, superoxide and nitric oxide and their reaction products regulate many processes, such as control of vascular tone and thus blood pressure. They also play a key role in the intermediary metabolism of various biological compounds. Such radicals can even be messengers in a phenomenon dubbed redox signaling. A radical may be trapped within a solvent cage or be otherwise bound.HistoryThe first organic free radical identified was triphenylmethyl radical. This species was discovered by Moses Gomberg in 1900 at the University of Michigan USA.Historically, the term radical was also used for bound parts of the molecule, especially when they remain unchanged in reactions. These are now called functional groups. For example, methyl alcoholwas described as consisting of a methyl "radical" and a hydroxyl "radical". Neither are radicals in the modern chemical sense, as they are permanently bound to each other, and have no unpaired, reactive electrons. However, they can be observed as radicals in mass spectrometry when broken apart by irradiation with energetic electrons.[edit]Depiction in chemical reactionsIn chemical equations, free radicals are frequently denoted by a dot placed immediately to the right of the atomic symbol or molecular formula as follows:Chlorine gas can be broken down by ultraviolet light to form atomic chlorine radicals. Radical reaction mechanisms use single-headed arrows to depict the movement of single electrons:The homolytic cleavage of the breaking bond is drawn with a 'fish-hook' arrow to distinguish from the usual movement of two electrons depicted by a standard curly arrow. It should be noted that the second electron of the breaking bond also moves to pair up with the attacking radical electron; this is not explicitly indicated in this case.Free radicals also take part in radical addition and radical substitution as reactive intermediates. Chain reactions involving free radicals can usually be divided into three distinct processes. These areinitiation, propagation, and termination.Initiation reactions are those that result in a net increase in the number of free radicals. They may involve the formation of free radicals from stable species as in Reaction 1 above or they may involve reactions of free radicals with stable species to form more free radicals.Propagation reactions are those reactions involving free radicals in which the total number of free radicals remains the same.Termination reactions are those reactions resulting in a net decrease in the number of free radicals. Typically two free radicals combine to form a more stable species, for example: 2Cl·→ Cl2
What has the author Dennis P Curran written?
Dennis P. Curran has written: 'Advances in Cycloaddition' 'Stereochemistry of radical reactions' -- subject(s): Stereochemistry, Free radical reactions, Radicals (Chemistry)
When was Free Radicals - film - created?
Free Radicals - film - was created in 1979.
What is the duration of Free Radicals film?
The duration of Free Radicals - film - is 240.0 seconds.
Antioxidants fight against free radicals?
Yes. Antioxidants do fight againist free radicals.
Is it possible to create genes what can permanently destroy free radicals?
No - free radicals are a transient phenomenon.
What occurs during a light reaction?
Light is a form of energy. Light energy can be used to initiate chemical reactions. For instance light can be used to break chemical bonds homolytically, that is to say break the chemical bonds in a molecule to form free radicals. Free radicals are more reactive than the molecules from which they have formed because they possess more energy. These free radicals can then interact to produce new molecules, new products.
Why is it important for the cell membrane to be selectively premeable?
It makes it harder for viruses and free radicals to reach the nucleus.
Does smiling removes free radicals?
Not if you believe Abbey Hoffman. He claims that it was the Chicago Police Department who removed all the free radicals.
Why antioxidant levels decrease in the epilepsy patients?
When free radicals build up and causedestructionof nerve cells which leads to the seizures. Antioxidants bind to free radicals preventing them fromdestroyingcells and in turn preventing seizures. Some epilepticpatientshaveelevatedlevels of free radicals.
