乙烯(中学化学双语教学-省常中-房寿高)

Etheneorethylene

乙烯江苏省常州高级中学房寿高ripe

unripePlanthormones(植物激素）Etheneorethylene

乙烯1.Componentandstructureethene

MoleculeformulaElectronic～

Structural～Simplesructure

～C2H4：··CC：：：··HHHHH—CC—HHHCH2CH2C2H6H—CC—HHHHHCH3CH3ethaneExperimental～

CH2CH3ball-and-stickmodel

space-fillingmodelSixatomsareinaplane2、Physicalproperties

colorlesswithafaint"sweetandmusky“麝香的

odorwhenpure;insolubleinwater.3、chemicalproperties1)Oxidationreaction①burninginoxygenPhenomena:abrightflamewithslightblacksmoke②

makeKMnO4(H+)fade5C2H4+

12KMnO4+18H2SO4→12MnSO4+6K2SO4+10CO2↑+28H2Oquestion：CanKMnO4(H+)beusedtogetridofC2H4inCH4?2)Additionreaction(加成反应）CH2=CH2

+Br2→Inthedoublebond,thereisonebondWhichisunstableanditiseasytobebroken.Someotheradditionreactions:CH3CH2ClCH3CH3CH3CH2OH

CH2=CH2+H2

CH2=CH2+HＣl

CH2=CH2+H2O

Question:TherearetwowaystogetCH3CH2Cl:①

CH3CH3reactswithCl2underthelight;②CH2=CH2reactswithHCl,Whichisbetter?Why?3)additionpolymerization（加聚反应）

polyethylene[,pɔli:'eθə,li:n]

orpolythene

简称：PEPreservative[pri'zə:vətiv]

film

保鲜膜polyvinyl[,pɔli'vainil]

chloride

(PVC)聚氯乙烯

polypropylene[,pɔli'prəupə,li:n]聚丙烯简称：PPnCH2=CH2

［CH2CH2］n催化剂△,P

(聚乙烯)单体链节聚合度催化剂CH＝CH2n〔CH－CH2〕n单体链节聚合度monomer['mɔnəmə]

degreeofpolymerizationnCF2=CF2

聚四氟乙烯polytetrafluoroethylene

['pɔli,tetrə-,fluərəu'eθili:n]

teflon

特氟龙non-stickfrypan

4、Application①tomeasuretheindustrialdevelopmentofpetroleum([pi‘trəuliəm,pə-])ofacountry.

②industrialchemicals(化工原料