Cov txheej txheem:

Cov tshuaj tiv thaiv dab tsi tshwm sim thaum cawv tsim los ntawm alkene?
Cov tshuaj tiv thaiv dab tsi tshwm sim thaum cawv tsim los ntawm alkene?

Video: Cov tshuaj tiv thaiv dab tsi tshwm sim thaum cawv tsim los ntawm alkene?

Video: Cov tshuaj tiv thaiv dab tsi tshwm sim thaum cawv tsim los ntawm alkene?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
Anonim

Nplooj ntawv no saib ntawm kev tsim cov cawv los ntawm kev ncaj qha hydration ntawm alkenes - ntxiv dej ncaj qha mus rau carbon-carbon ob daim ntawv cog lus. Ethanol yog tsim los ntawm reacting ethene nrog chav. Cov tshuaj tiv thaiv yog thim rov qab. Tsuas yog 5% ntawm ethene hloov mus rau hauv ethanol ntawm txhua qhov dhau los ntawm lub reactor.

Ua raws li qhov kev pom no, koj ua li cas ua ib qho alkene los ntawm cawv?

Los ntawm acid catalysed hydration ntawm alkenes

  1. Kauj Ruam 1: Alkene tau txais protonation los ua carbocation los ntawm electrophilic nres ntawm H3O+.
  2. Kauj Ruam 2: Dej, ua ib qho nucleophile, tawm tsam ntawm carbocation.
  3. Kauj Ruam 3: Deprotonation tshwm sim los ua ib qho cawv.

Ib sab saum toj no, hom tshuaj tiv thaiv dab tsi yog lub cev qhuav dej ntawm cawv? Cov tshuaj tiv thaiv lub cev qhuav dej yog ib hom tshuaj tiv thaiv nyob rau hauv dej yog tsim los ntawm extraction ntawm cov khoom ntawm dej los ntawm ib qho reactant. Ib qho alkene yog tsim thaum lub cev qhuav dej ntawm cawv ua tiav.

Kuj Paub, ua li cas cawv tsim los ntawm alkanes?

Cawv tuaj yeem ua los ntawm alkyl halides, uas tuaj yeem ua los ntawm alkanes . Yog li los ntawm converting ib alkane rau hauv alkyl halide los ntawm cov dawb radical halogenation mechanism thiab tom qab ntawd los ntawm kev kho cov alkyl halide nrog lub hauv paus muaj zog zoo li NaOH lossis KOH peb tuaj yeem tau txais. cawv …

Yuav ua li cas thaum alkene reacts nrog dej?

Alkenes undergo ib qho ntxiv tshuaj tiv thaiv nrog dej nyob rau hauv lub xub ntiag ntawm ib tug catalyst los tsim ib tug cawv. Hom kev sib ntxiv no tshuaj tiv thaiv hu ua hydration. Cov dej yog ntxiv ncaj qha rau carbon - carbon ob daim ntawv cog lus. Lub hydration ntawm alkenes tuaj yeem ua tau los ntawm ntau txoj kev.

Pom zoo: