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3350 - 4185 J/g for polymerisation of ethylene gas

taken from eng-tips.com

ref Plastics Materials 5th ed J A Brydson 1989 p198

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Does hydration of ethylene to form ethanol a type of exothermic reaction?

Yes, the heat of reaction is negative therefore indicating an exothermic reaction


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Hydrotreating reaction is an exothermic reaction. The total reaction provides excess reaction heat; more is produced by the exothermic hydrogenation reactions than are required to support the endothermic cracking reactions.High Olefin conc. leads to high temp. rise due to hydrogenation reaction.This excess heat increases the reactor temperature and accelerates the reaction rate. Temperature rise can be controlled by injecting cold hydrogen or cold recycled quench into the reactors to absorb excess reaction heat.


What is chemical enery?

Chemical energy is potential energy until the chemical reaction puts atoms and molecules in motion. Heat energy (KE) is often the result of a chemical reaction.


How is urea manufactured industrially?

It is through one reaction which releases heat and another which absorbs it that urea is synthesized in industry.Specifically, the first reaction involves ammonia and carbon dioxide. The energy release results in the formation of ammonium carbamante. The second reaction will break above-mentioned compound down into urea and water.


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Related Questions

Does hydration of ethylene to form ethanol a type of exothermic reaction?

Yes, the heat of reaction is negative therefore indicating an exothermic reaction


Energy is lost from a reaction in a form of what?

Energy is lost from a reaction in the form of heat. This heat is often referred to as exothermic heat, as it is released from the system during the reaction.


Describe the formation of polyethene as an example of additional polymerisation of monomer units?

Alkene such as ethene contain c=c double bond.Hence these molecules can take part in addition reaction where the double bond is broken and other atoms attach to the carbon across the double bond to form large molecule such as polyethene. Here the ethene is the monomer and polyethene the addition polymer which is formed under high pressure, heat and by using a catalyst.


In what form is the energy released in this reaction?

In an exothermic reaction heat energy is released.


What is a reaction that releases energy in the form of heat?

Exothermic reaction


Reaction that absorbs energy in the form of heat?

Endothermic reaction. In an endothermic reaction, energy is absorbed by the system from the surroundings in the form of heat, causing the surroundings to cool down.


A chemical reaction that gives off heat is most likely to be what?

An endothermic reaction is one that consumes heat.


What are green bags made out of?

Many common plastic grocery bags are often made from polyethylene. Polyethylene (Poly meaning many) is simply long chains of ethylene monomers. The origin of ethylene is both natural gas an petroleum.


What is a reaction that gives out a lot of heat?

An example of a reaction that gives out a lot of heat is the combustion of gasoline in engines. This reaction releases a large amount of energy in the form of heat and light.


Energy is given off in the form of heat during a?

exothermic reaction. This type of reaction releases energy to the surroundings as heat.


If the energy released in a chemical reaction primarily in the form of heat of reaction?

yes


A chemical reaction that absorbs energy in the form of heat is called?

Endothermic reaction