Video: Puas yog Cl A zoo dua nucleophile dua li Br?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
#468 hauv 1001 hauv Orgo Chem Examkrackers hais tias Br - yog a zoo nucleophile tshaj Cl -, tab sis #458 hais tias Br - yog a zoo tawm hauv pab pawg tshaj Cl -. zoo li koj hais Br - yog loj dua dua li Cl - thiab tuaj yeem yog li ntawd zoo dua stabilize tus nqi tsis zoo, ua rau nws a zoo dua tawm hauv pab pawg.
Yog li ntawd, Br lossis kuv Nucleophile puas zoo dua?
Iodine yog qhov tsawg kawg nkaus electronegative hauv halogens. Yog li ntawd, nws tuaj yeem yooj yim pub ib khub ntawm electron thiab yog li ua ib qho zoo nucleophile . Whereas, bromine yog qhov me me piv rau iodine yog li nws yuav tuav cov electrons ntau nruj. Yog li ntawd, nws yog ib qho nyuaj rau bromine kom poob electrons.
Tom qab ntawd, lo lus nug yog, Kuv puas yog Nucleophile zoo? Kuv - yog ib tug muaj zog nucleophile vim nws yog polarizable, ua rau nws ceev rau nws orbitals sib tshooj nrog cov electrophile. Nco ntsoov tias qhov pib yog lub tswv yim thermodynamic thiab nucleophilicity yog lub tswv yim kinetic.
Ib yam li ntawd, tib neeg nug, vim li cas iodine yog nucleophile zoo dua li bromine?
iodide ion yog a zoo nucleophile vim nws muaj atomic radius loj. Yog li ntawd, kuv yog ib tug zoo nucleophile thiab a zoo nucleophile tshaj F-, Cl-, thiab Br- raws li nws muaj peev xwm pub tau ib khub ntawm nws sab nraud electrons rau ib qho electrophile, tsim ib daim ntawv cog lus dative covalent.
Dab tsi reagent yog Nucleophile zoo?
NH2(-) zoo dua nucleophile mas NH3. HS(-) zoo dua nucleophile tshaj H2S. Qhov ntau dua qhov tsis zoo, qhov ntau dua ib lub atom yuav tso nws ob lub electrons los ua ib daim ntawv cog lus.
Pom zoo:
Dab tsi ua rau txoj kev xav zoo ib qho kev xav zoo txog kev puas siab puas ntsws?
Ib txoj kev xav zoo yog kev sib koom ua ke - nws piav qhia ntau qhov tseeb thiab kev soj ntsuam hauv ib qho qauv lossis lub hauv paus. Txoj kev xav yuav tsum yog nyob rau hauv ib yam. Ib txoj kev xav zoo yuav tsum ua qhov kev kwv yees uas tuaj yeem kuaj tau. Qhov ntau meej thiab "tseem ceeb" qhov kev xav ntawm kev kwv yees yog - qhov ntau nws nthuav tawm nws tus kheej mus rau kev dag
Puas yog rods Gram tsis zoo los yog zoo?
Gram positive rods tsawg dua li Gram negative rods. Tag nrho cov seem yog Gram negative rods. Gram zoo rods; Actinomyces, Atopobium, Bacillus, Bifidobacterium, Clostridium, Corynebacterium, Erysipelothrix, Gardnerella, Listeria, Lactobacillus, Mycobacterium sp
Puas yog molar kub ntawm combustion zoo los yog tsis zoo?
Thaum tshav kub kub ntawm combustion yog hais raws li tus xov tooj zoo thaum lub enthalpy hloov ntawm combustion tshua (Δ H) yog hais raws li tsis zoo cov zauv, raws li combustion tshwm sim yeej ib txwm exothermic
Vim li cas tsis zoo thiab tsis zoo yog qhov zoo?
Thaum koj muab qhov tsis zoo los ntawm qhov tsis zoo koj tau txais qhov zoo, vim tias ob lub cim tsis zoo raug muab tso tseg
Koj yuav ua li cas thiaj paub tias kev sib raug zoo yog qhov zoo lossis tsis zoo?
Qhov zoo correlation coefficient txhais tau hais tias raws li tus nqi ntawm ib qho kev sib txawv nce, tus nqi ntawm lwm qhov sib txawv nce; raws li ib tug txo qhov qis dua. Qhov tsis zoo correlation coefficient qhia tau hais tias raws li ib qho kev sib txawv nce, qhov txo qis, thiab vice-versa