Why are alkenes reactive in nature?
Question
Why are alkenes reactive in nature?
Solution
Alkenes are reactive in nature due to the presence of a carbon-carbon double bond. Here's a step-by-step explanation:
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Alkenes are hydrocarbons, which means they are made up of hydrogen and carbon atoms. The key feature of alkenes is the presence of a carbon-carbon double bond.
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This double bond is made up of one sigma bond and one pi bond. The sigma bond is strong and stable, but the pi bond is weaker and more exposed, making it more susceptible to reactions.
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The pi bond has a high electron density, which makes it an attractive site for electrophiles - species that are attracted to regions of high electron density.
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When an electrophile approaches the alkene, it can interact with the pi electrons, leading to the breaking of the pi bond and the formation of a new sigma bond with the electrophile. This is the basis of many reactions of alkenes, such as addition reactions.
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Furthermore, the double bond in alkenes also allows for cis-trans isomerism, which can lead to different products in reactions, adding to the reactivity of alkenes.
So, the reactivity of alkenes is primarily due to the presence of the carbon-carbon double bond, which provides a site of high electron density for electrophiles to attack.
Similar Questions
recall the reactants and conditions by which alkenes can beproduced
What feature of alkenes makes them more reactive than alkanes? They have lower boiling pointsThey have longer chainsThey have at least one carbon-carbon double bondThey are saturated2Which of the following is butene? C2H4C4H8C4H10C3H63What is the balanced equation for the complete combustion of ethene? 2C2H4 + 2O2 → 2CO2 +2H2OC2H4 + 3O2 → 2CO2 + 2H2OC2H6 + 3O2 → 2CO2 + 2H2OC2H4 + O2 → CO2 + H2O4Alkenes can react with hydrogen, halogens or water. What type of reactions are these?ReductionAdditionCombustionOxidation5In industry, how is the percentage of unsaturated fat in an oil reduced to turn it into a spreadable solid?By reacting it with hydrogenBy reacting it with bromineBy reacting it with oxygenBy reacting it with steam6Ethene reacts with steam to form ethanol. What is the formula of ethanol?C2H6C2H4 C3H7OHC2H5OH
2. Compare the reactivity and stability of alkynes and alkenes
The alkenes are unsaturated hydrocarbons. They form a homologous series, the members ofwhich have the same chemical properties.They undergo addition reactions and are easily oxidised.(a) The following hydrocarbons are isomers.CH 3 CH CH CH 2CH 3CH 3 CH 2 CH 2 CH CH 2(i) Explain why these two hydrocarbons are isomers................................................................................................................................................................................................................................................................... [2](ii) Give the structural formula of another hydrocarbon which is isomeric with the above.[1](b) Give the structural formula and name of each of the products of the following additionreactions.(i) ethene and brominestructural formula of productname of product ................................................................................................... [2](ii) propene and hydrogenstructural formula of productname of product ................................................................................................... [2](iii) but-1-ene and waterstructural formula of productname of product ................................................................................................... [2]PhysicsAndMathsTutor.com
Writing the name of the reaction that converts alkenes into alkanes
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