Video: Yuav ua li cas ntxiv bromine rau alkene?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Alkenes react nyob rau hauv txias nrog cov kua ntshiab bromine , los yog nrog ib tug daws ntawm bromine nyob rau hauv cov organic hnyav xws li tetrachloromethane. Ob daim ntawv cog lus tawg, thiab a bromine atom ua txuas rau txhua cov pa roj carbon. Cov bromine poob nws cov xim liab-xim av kom muab cov kua tsis muaj xim.
Ib yam li ib tug yuav nug, yuav ua li cas thaum koj ntxiv dej bromine rau ib qho alkene?
Test rau Alkenes . Ib alkene yuav tig xim av bromine dej colorless li cov bromine reacts nrog carbon-carbon ob daim ntawv cog lus. Qhov tseeb, qhov tshuaj tiv thaiv no yuav tshwm sim rau cov khoom sib txuas uas tsis muaj cov pa roj carbon-carbon ob daim ntawv cog lus. Ib qho alkane undergoes tsis muaj kev cuam tshuam nrog bromine dej thiab yog li ntawd tsis muaj kev hloov xim.
Tsis tas li ntawd, bromination ntawm alkene yog dab tsi? Reaction Overview: Lub halogenation ntawm alkene tshuaj tiv thaiv, tshwj xeeb bromination los yog chlorination, yog ib qho uas dihalide xws li Cl2 los yog Br2 yog ntxiv rau ib lub molecule tom qab tawg cov pa roj carbon ob daim ntawv cog lus. Cov halides ntxiv rau cov carbons nyob sib ze los ntawm lub ntsej muag ntawm cov molecule.
Tom qab ntawd, lo lus nug yog, br2 ua li cas nrog alkenes?
Description: Kev kho mob ntawm alkenes nrog bromine ( Br2 ) muab vicinal dibromides (1, 2-dibromides). Lus Cim: Cov bromines ntxiv rau lub ntsej muag ntawm ob daim ntawv cog lus ("anti ntxiv"). Qee zaum cov kuab tshuaj yog hais hauv no tshuaj tiv thaiv - ib qho hnyav hnyav yog carbon tetrachloride (CCl4).
Vim li cas cov xim ploj thaum bromine reacts nrog alkene?
Thaum twg bromine reacts nrog alkene , liab tsaus xim ntawm Br2 ploj sai li cov atoms ntawm bromine tsim daim ntawv cog lus nrog cov pa roj carbon atoms hauv ob daim ntawv cog lus. Yog tias xim ploj sai heev, peb paub tias cov compound muaj ib qhov chaw tsis txaus.
Pom zoo:
Yuav ua li cas tshwm sim thaum bromine reacts nrog ib tug alkene?
Alkenes hnov mob hauv qhov txias nrog cov kua ntshiab bromine, lossis nrog kev daws ntawm bromine hauv cov kuab tshuaj organic xws li tetrachloromethane. Qhov ob daim ntawv cog lus tawg, thiab ib qho bromine atom ua txuas rau txhua cov pa roj carbon. Cov bromine poob nws cov xim liab-xim av kom muab cov kua tsis muaj xim
Vim li cas bromine Decolourise thaum ntxiv rau alkene?
Bromine rhuav tshem ob daim ntawv cog lus ntawm cyclohexene (thiab tag nrho cov alkenes), ua rau cov qauv molecular hloov thiab yog li cov molecule lub zog hloov. Bromine yog reactive heev vim hais tias nws tuaj yeem tsim cov dawb radicals, uas txhais tau hais tias muaj ib qho molecule ntawm Br nrog ib qho tsis sib xws ntawm electrons
Thaum HBr ntxiv rau alkene nyob rau hauv muaj h2o2?
Qhov no yog hu ua Markovnikov's Rule. Vim hais tias HBr ntxiv rau 'txoj kev tsis ncaj ncees nyob ib puag ncig' nyob rau hauv lub xub ntiag ntawm cov organic peroxides, qhov no feem ntau hu ua cov nyhuv peroxide lossis anti-Markovnikov ntxiv. Thaum tsis muaj peroxides, hydrogen bromide ntxiv rau propene ntawm ib qho kev sib ntxiv ntawm electrophilic
Yuav ua li cas thaum koj ntxiv dej rau ib qho alkene?
Nws yog lub xub ntiag ntawm ob daim ntawv cog lus no uas ua rau alkenes reactive dua alkanes. Alkenes tau txais cov tshuaj tiv thaiv ntxiv nrog dej nyob rau hauv lub xub ntiag ntawm lub catalyst los tsim ib qho cawv. Hom kev sib ntxiv no hu ua hydration. Cov dej yog ntxiv ncaj qha rau carbon - carbon ob daim ntawv cog lus
Dab tsi ua rau cov kaum sab nrauv ntxiv ntxiv rau?
Yog hais tias lub transversal txiav hla cov kab sib txuas (cov ntaub ntawv li niaj zaus) ces cov ces kaum sab nrauv yog ntxiv (ntxiv rau 180 °). Yog li hauv daim duab saum toj no, thaum koj txav cov ntsiab lus A lossis B, ob lub kaum sab xis qhia ib txwm ntxiv rau 180 °