Video: Yuav ua li cas tshwm sim thaum bromine reacts nrog ib tug alkene?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Alkenes teb hauv qhov 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.
Tsis tas li ntawd, yuav ua li cas tshwm sim thaum alkane reacts nrog bromine?
Cov tshuaj tiv thaiv nrog bromine muab ib qho alkyl bromide. Unsaturated hydrocarbons xws li alkenes thiab alkynes muaj ntau reactive dua li niam txiv alkanes . Lawv teb sai nrog bromine , piv txwv li, ntxiv rau Br2 molecule hla C = C ob daim ntawv cog lus. Qhov no tshuaj tiv thaiv muab ib txoj hauv kev los ntsuas alkenes lossis alkynes.
Ib yam li ntawd, cov tshuaj twg tuaj yeem ua tau los ntawm kev ua rau alkene nrog bromine? Nqe lus piav qhia: Kev kho cov 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 tau hais hauv cov tshuaj tiv thaiv no - ib qho hnyav hnyav carbon tetrachloride (CCl4).
Ib sab saum toj, vim li cas cov xim ploj thaum bromine reacts nrog ib qho 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.
Dab tsi yog cov tshuaj tiv thaiv mechanism rau bromination ntawm alkene?
Cov tshuaj tiv thaiv Txheej txheem cej luam: The alkene halogenation cov 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.
Pom zoo:
Yuav ua li cas tshwm sim thaum sodium reacts nrog hydrochloric acid?
Sodium hlau reacts nrog hydrochloric acid los ua ntsev thiab hydrogen gas. Qhov no txhais tau hais tias koj cov reactants yuav yog sodium hlau thiab hydrochloric acid, vim cov no yog cov khoom uas tau hloov mus rau hauv cov ntsev thiab hydrogen gas
Yuav ua li cas tshwm sim thaum koj sib tov ib tug muaj zog acid nrog ib tug tsis muaj zog puag?
Hom 2: thaum muaj zog acid / base reacts nrog lub hauv paus tsis muaj zog / acid yog hydronium thiab hydroxyl ions tam sim no nyob rau hauv sib npaug amt ces ntsev thiab dej yog tsim thiab lub zog tso tawm uas tsawg tshaj li 57 kj / mole vim lub dissociation ntawm lub tsis muaj zog acid / puag uas feem ntau endothermic
Yuav ua li cas tshwm sim thaum propene reacts nrog hydrogen?
Raws li nrog rau tag nrho cov alkenes, unsymmetrical alkenes zoo li propene react nrog hydrogen bromide nyob rau hauv txias. Ob daim ntawv cog lus tawg thiab hydrogen atom xaus txuas rau ib qho ntawm cov pa roj carbon monoxide thiab ib qho bromine atom mus rau lwm qhov. Nyob rau hauv cov ntaub ntawv ntawm propene, 2-bromopropane yog tsim
Yuav ua li cas tshwm sim thaum ib tug tam sim no nqa coil muab tso rau hauv ib tug magnetic teb?
Yog tias tus neeg nqa khoom nqa tam sim no tau muab tso rau hauv qhov chaw sib nqus, nws ntsib lub zog Lorentz (tshwj tsis yog lub kaum sab xis ntawm qhov ntws ntawm tam sim no thiab cov kab hlau nplaum yog 0 °)
Yuav ua li cas yog qhov tshwm sim uas ib tug poj niam dig muag xim uas yuav ib tug txiv neej uas tsis pom kev zoo yuav muaj xim dig muag me nyuam?
Yog tias tus poj niam uas muaj lub zeem muag zoo li no (heterozygous rau qhov muag tsis pom xim) yuav ib tug txiv neej ib txwm muaj (XY), cov xeeb ceem hauv qab no tuaj yeem xav tau hauv F2 tiam: ntawm cov ntxhais, 50% yog ib txwm muaj thiab 50% yog cov neeg nqa khoom rau cov kab mob; ntawm cov tub, 50% yog xim dig muag thiab 50% yog qhov pom kev zoo