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How can i Outline the Inhibition of combustion chains involving a free radicals mechanism?
Wiki User
∙ 10y ago
The combustion process begins when a fuel source is heated beyond its ignition temperature in the presence of an oxidant, with this molecular energy creating a self-sustaining chemical chain reaction of radicals when the energy it produces is greater than or equal to the energy needed for continued burning.
so by this definition removal of the oxidising agent will prevent the chain reaction to occur.
Wiki User
∙ 10y ago
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What is carbon monoxide cycle?
Carbon monoxide is first produced by either human activities involving combustion or a variety of natural processes. From there on, it reacts with oxygen/hydrogen radicals in the atmosphere and become carbon dioxide. The fact that most carbon monoxide will become carbon dioxide when left in the atmosphere long enough can help explain why the carbon monoxide cycle is not taught in school.
How are chlorine free radicals are formed in the upper atmosphere?
Chlorine radicals are formed by CFC's. They deplete the ozone layer.
What are the chemical reactions in internal combustion engine?
Internal combustion engines usually use some kind of hydrocarbon fuel (gasoline for example). The fuel is burned together with the oxidizer (atmospheric air in most cases with the exception of rocket engines). The result of the chemical reaction between the hydrocarbon fuel and air is H2O, CO2 and, in smaller quantities (depending on the proportions in which the fuel and air are mixed into the combustion chamber), some radicals like CO, OH, O, H maybe even C solid particles (also known as soot). The process is not as simple as it is taught in high school chemistry as there's no single reaction leading from reactants to final products. There are many reactions leading from the decomposition of the gasoline and air molecules to the formation of the final products (all of this reactions form the reaction mechanism). You can read more about reaction mechanisms in the related link.
Will large numbers of radicals within the body increase the risk of coronary heart disease?
Oxygen free radicals will :D
How does radiation affect the structure of a stable molecule such as a molecule of water?
Radiation can involve gamma rays, X-Rays, alpha particles and beta partcles. In terms of molecules these are termed ionizing radiation but they both ionize and break bonds to produce radicals. Ionizing radiations effect on water is to produce hydrogen peroxide, hydrogen, oxygen, ozone, . The pathways are complex involving the breakdown of water molecules into positively charged radicals, such as H2O+, neutral radicals OH and H and solvated electrons. Chain reactions coupled with reionization of some of the "initial" products makes for a complex situation.
What is the mechanism used in thermal cracking?
A homolytic mechanism so free radicals appear when bonds are broken symetrically.
How do you solve radicals in math?
That depends on the type of problem. For example, if you have equations involving radicals, it often helps to square both sides of the equation. Note that when you do this, you may introduce additional solutions, which are not solutions to the original equation.
What is termination in chemistry?
Termination is a type of reaction in which a chain reaction involving radicals is "terminated" generally by the elimination of the radicals via pairing of two radical species.
What is carbon monoxide cycle?
Carbon monoxide is first produced by either human activities involving combustion or a variety of natural processes. From there on, it reacts with oxygen/hydrogen radicals in the atmosphere and become carbon dioxide. The fact that most carbon monoxide will become carbon dioxide when left in the atmosphere long enough can help explain why the carbon monoxide cycle is not taught in school.
What is meant by acidic radicals?
electronegative radicals are anions or acid radicals.
What is irrational and radicals?
what are irrational and radicals and rationals
What is acidic radicals?
what are acidic radicals group one
What are similar radicals?
similar radicals are radicals with desame index and radicand ex: the square root of 5 squared
Who wrote the song you've got the music in you?
"You get what you give" by the New Radicals
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
How can unlike radicals be changed into like radicals?
Multiply by the conjugate.
When was Radicals of the Left created?
Radicals of the Left was created in 2004.
