Cov txheej txheem:
- Qhov twg ntawm cov tshuaj hauv qab no ntawm diazotization ua raws li kev sib txuas nrog 2 naphthol yuav tsim?
- Qhov twg ntawm cov tebchaw ua rau cov tshuaj tiv thaiv diazotization?
- koj txhais li cas los ntawm diazonium coupling?
- Dab tsi yog qhov tshuaj tiv thaiv diazotization muab piv txwv?
Video: Qhov twg ntawm cov tshuaj hauv qab no ntawm diazotization ua raws li kev sib txuas?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Teb: Cov tshuaj ntawm diazotization ua raws li kev sib txuas nrog yog p-Toluidine becoz nws yog thawj cov tshuaj tsw qab amines. thawj amines lossis thawj cov tshuaj tsw qab amines yog cov nucleophiles zoo uas yog vim li cas lawv tau txais kev sib txuas lus. Lub npe ntawm aromatic amines yog aniline (C6H5NH2).
Qhov twg ntawm cov tshuaj hauv qab no ntawm diazotization ua raws li kev sib txuas nrog 2 naphthol yuav tsim?
Ntxiv benzene diazonium chloride reacts nrog 2-naphthol tsim cov xim txiv kab ntxwv ci 2-naphthol aniline dye. Azo tebchaw yog npaj los ntawm cov tshuaj tiv thaiv ntawm diazonium ntsev nrog phenol nyob rau hauv alkaline tej yam kev mob.
Qhov twg ntawm cov tebchaw ua rau cov tshuaj tiv thaiv diazotization?
7.9.
Diazotization yog ib qho tseem ceeb ntawm 1° amines Hauv cov txheej txheem diazotization, NH 2 pawg hloov mus rau diazonium ntsev, R–N2+X- Qhov no yog ua los ntawm cov tshuaj tiv thaiv nitrous acid (HNO2). Cov ntsev reactive feem ntau tsis cais.
koj txhais li cas los ntawm diazonium coupling?
Ib qho azo coupling yog cov tshuaj tiv thaiv organic ntawm diazonium compound thiab lwm cov tshuaj tsw qab uas tsim cov azo compound Hauv cov tshuaj tiv thaiv hluav taws xob uas muaj ntxhiab hloov pauv, aryldiazonium cation yog electrophile thiab activated arene yog nucleophile.
Dab tsi yog qhov tshuaj tiv thaiv diazotization muab piv txwv?
Aromatic Amine + Nitrous Acid + Mineral Acid? Diazonium ntsev + Dej. Cov tshuaj nyob rau hauv uas amino los yog hloov cov amino pawg yog sib txuas ncaj qha mus rau lub nplhaib uas muaj ntxhiab yog hu ua aromatic amines. Piv txwv li - Nitrous acid yog ib qho tsis muaj zog thiab monobasic acid uas feem ntau yog siv rau theem gaseous. Nws cov qauv yog HNO2.
Pom zoo:
Dab tsi ntawm cov hauv qab no yog cov ntsiab lus ntawm kev sib txuas lus qauv ntawm de-escalation?
Lub Yim Hli Mloog. Kev mloog tso cai rau tus neeg npau taws "dej," uas yog txhais tau tias ua kom lub zog npau taws. … Acknowledge. Relaying tias koj nkag siab tias tus neeg lub ntsiab lus yog dab tsi los yog kev xav pab los ntawm kev lees paub lawv cov kev xav.
Lub polymer twg muaj kev sib txuas ntawm kev sib txuas?
Ntawm no, los ntawm cov kev xaiv muab Nylon-6, 6 yog cov polymer uas muaj kev sib txuas ntawm amide. Yog li, nylons tseem hu ua polyamides vim lawv cov yam ntxwv amide pawg hauv cov pob txha caj qaum. Amide pawg nyob rau hauv nylon molecules yog heev polar, thiab tsim hydrogen bonding ib leeg .
Leej twg tsim tus qauv kev sib txuas lus ntawm kev sib txuas lus?
Tus qauv kev sib txuas lus ntawm kev sib txuas lus tsim los ntawm Wilbur Schramm ua raws li tus qauv linear. Schramm ntxiv peb yam tseem ceeb rau Shannon thiab Weaver qauv. Ua ntej, Schramm tau txheeb xyuas ob txheej txheem ntawm kev sib txuas lus:
Qhov twg ntawm cov kuab tshuaj hauv qab no yog siv rau hauv kev sib txuas ntawm chlorofluorocarbon?
Dichloromethane yog ntau yam kev lag luam hnyav. Tus kws tshawb fawb Belgian Frédéric Swarts pioneer lub synthesis ntawm CFCs nyob rau hauv 1890s . CFCs ua li cas? CFCs thiab HCFCs feem ntau yog tsim los ntawm kev sib pauv halogen pib los ntawm chlorinated methanes thiab ethanesCov derivatives brominated yog tsim los ntawm cov tshuaj dawb-radical ntawm chlorofluorocarbons, hloov C-H daim ntawv cog lus nrog C- Br daim ntawv cog lus.
Nyob rau hauv ib qho kev tsis sib haum xeeb pn kev sib tshuam cov kev sib tshuam tam sim no ntawm qhov sib npaug yog?
Nyob rau hauv qhov tsis ncaj ncees PN-kho qhov kev sib tshuam tam sim no ntawm qhov sib npaug yog zero, vim tias sib npaug tab sis cov neeg nqa khoom hla hla kev sib tshuam . Thaum pn kev sib tshuam tsis ncaj ncees qhov kev sib tshuam tam sim no ntawm qhov sib npaug yog?
