Video: Vim li cas bromine Decolourise thaum ntxiv rau alkene?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Bromine rhuav tshem ob daim ntawv cog lus ntawm cyclohexene (thiab tag nrho alkenes ), ua rau cov qauv molecular hloov thiab yog li cov molecule lub zog hloov. Bromine Nws yog ib qho reactive heev vim 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.
Ib yam li ib tug yuav nug, 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.
Tsis tas li ntawd, cov tshuaj tiv thaiv dab tsi tshwm sim thaum alkene Decolourise bromine hauv tetrachloromethane nyob rau hauv lub hnub ci? Cov tshuaj tiv thaiv nruab nrab ntawm hexene thiab bromine hauv muaj nyob ntawm lub teeb muab 3-bromocyclohexene.
Yuav ua li cas thaum koj ntxiv bromine rau alkene?
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.
Yuav ua li cas thaum cyclohexene reacts nrog bromine?
Tom qab ntawd bromonium ion raug tawm tsam los ntawm sab nraub qaum los ntawm bromide ion tsim nyob rau hauv ib qho ze tshuaj tiv thaiv . Cyclohexene reacts nrog bromine nyob rau hauv tib txoj kev thiab nyob rau hauv tib txoj kev raws li lwm yam alkene. 1, 2-dibromocyclohexane yog tsim. Cov tshuaj tiv thaiv yog ib qho piv txwv ntawm electrophilic ntxiv.
Pom zoo:
Yuav ua li cas ntxiv bromine rau 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
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
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
Vim li cas oxalic acid Decolourise poov tshuaj permanganate?
Oxalic acid reacts nrog poov tshuaj permanganate nyob rau hauv acidic tov thiab oxidized rau carbon dioxide thiab dej. Cov xim tsis muaj xim manganese II yog tsim. Lus Cim: Cov poov tshuaj yog 'tus saib' ion thiab tsis suav nrog. Cov poov tshuaj permanganate poob nws cov xim, uas muab qhov yooj yim los ntsuas qhov kawg ntawm cov tshuaj tiv thaiv
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