2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Nitration thiab sulfonation ntawm benzene yog ob qho piv txwv ntawm electrophilic aromatic hloov. Nitronium ion (NO 2+) thiab sulfur trioxide (SO3) yog cov electrophiles thiab tus kheej hnov mob nrog benzene muab nitrobenzene thiab benzenesulfonic acid feem.
Qhov twg hauv qab no yog ib qho electrophile hauv cov tshuaj tsw qab nitration?
" Nitronium ion" lossis "nitryl cation "yog cov electrophile, TSIS MUAJ 2 +. Qhov no yog tshwm sim los ntawm cov tshuaj tiv thaiv ntawm sulfuric acid thiab nitric acid. Cov hauj lwm no ces deactivated nyob rau hauv cov kev taw qhia ntawm electrophilic aromatic hloov. …
Cov hom twg pom ua raws li electrophile hauv nitration ntawm benzene?
sulfuric acid catalyzes nitration ntawm benzene, converting nitric acid rau electrophile.
Cov hom twg hauv qab no sawv cev rau tus electrophile?
SO3 is an electrophile.
Electrophile hauv aromatic nitration chegg yog dab tsi?
Txheej txheem cej luam ntawm Aromatic Nitration
. Lub Aromatic Nitration yog qhov kev txiav txim thib ob, piv txwv li, cov tshuaj tiv thaiv bimolecular vim tias tus nqi txiav txim siab qeeb tshaj plaws ntawm cov tshuaj tiv thaiv no tsuas yog nyob ntawm Aromatic compound thiab Electrophile Nitronium ion- N O 2 + \rm NO_2^+ NO2 +.
Pom zoo:
In saml twg hauv qab no sawv cev rau tus neeg siv kawg?
SAML 2.0 yog XML-raws li kev cai uas siv kev ruaj ntseg tokens uas muaj cov lus lees paub kom dhau cov ntaub ntawv hais txog a tus thawj tswj hwm (feem ntau yog tus neeg siv kawg) ntawm SAML txoj cai, hu ua Tus Muab Kev Pab Cuam, thiab tus neeg siv khoom SAML, hu ua Tus Muab Kev Pabcuam.
Qhov twg hauv qab no sawv cev rau tus xov tooj?
3. Qhov twg hauv qab no sawv cev rau telemeter? Kev piav qhia: Telemeter yog lub cuab yeej siv rau lub hom phiaj ntawm telemetry, thiab nws yuav yog analog lossis digital. 4. Dab tsi muaj telemetry? Nws muaj a sensor, txoj kev sib kis, thiab cov zaub, kaw, lossis tswj cov cuab yeej.
Yuav ua li cas txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau pom kev pom?
Txawm li cas los xij, corneal collagen cross-linking - cov txheej txheem qib siab tau pom zoo los ntawm US Food and Drug Administration (FDA) hauv xyoo 2016 - tuaj yeem txhim kho qhov pom kev hauv cov neeg mob txhua hnub nyoog. Corneal collagen cross-linking (CXL) tsis yog kho rau keratoconus, tab sis nws tuaj yeem pab tiv thaiv tus mob kom tsis txhob mob hnyav.
Nyob rau hauv micellar solubilization twg ntawm tus neeg sawv cev hauv qab no yog siv?
Cov tshuaj paclitaxel yog lipophilic hauv qhov xwm txheej thiab insoluble hauv dej. Nws daim ntawv tam sim no ua lag luam raws li kev txhaj tshuaj intravenous paclitaxel yog solubilized los ntawm kev siv Cremophor EL, uas yog cov nonionic surfactant thiab pab hauv micellar solubilization.
Qhov twg sawv cev rau cov qauv qhia pom rau a3b9?
AB3 AB2 A3B9 A9B27 Yuav ua li cas yog tus qauv qhia pom rau c2 h6? Piv txwv ntawm cov qauv qhia pom Cov mis mos molecular ntawm ethane yog C 2 H 6 . Nws qhia txog tus naj npawb ntawm cov atoms ntawm txhua lub hauv paus ntawm ethane molecule.
