2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Phthalimide yog cov organic compound nrog cov mis C₆H₄(CO)₂NH. Nws yog imide derivative ntawm phthalic anhydride. Nws yog ib qho sublimable dawb khoom uas yog me ntsis soluble hauv dej tab sis ntau dua li ntxiv ntawm lub hauv paus. Nws yog siv los ua tus thawj coj rau lwm cov organic tebchaw ua lub npog qhov ncauj ntawm ammonia.
Phthalimide npaj li cas?
Phthalimide tsim li cas? Phthalimide tuaj yeem npaj tau los ntawm cua kub dej cawv ammonia nrog phthalic anhydride, uas yields 95-97 feem pua. Xwb, nws tuaj yeem npaj tau los ntawm kev noj ammonium carbonate lossis urea los kho cov anhydride. Nws kuj tseem yuav tshwm sim los ntawm o-xylene ammoxidation.
Pab pawg ua haujlwm twg muaj nyob hauv Phthalimide?
Phthalimide muaj nitrogen atom flanked los ntawm ob pawg carbonyl. Xws li kev npaj ntawm cov pab pawg carbonyl txog nitrogen atom ua rau cov tebchaw koom nrog ua kua qaub me ntsis.
Imide group yog dab tsi?
Nyob rau hauv cov organic chemistry, ib qho imide yog ib pawg ua haujlwm uas muaj ob pawg acyl khi rau nitrogen. Cov tebchaw muaj kev cuam tshuam nrog cov kua qaub anhydrides, txawm hais tias imides tiv taus ntau dua rau hydrolysis.
YPuas phthalic acid yog dicarboxylic acid?
Phthalic acid yog ib qho aromatic dicarboxylic acid, nrog mis C6H4 (CO2H)2. Nws yog ib qho isomer ntawm isophthalic acid thiab terephthalic acid.
Pom zoo:
Puas yog cov dab dab dab dab dab dab dab dab dab dab dab dab?
Myth: Ib tug dab tshos tsis yog neeg ncaj ncees yog tiasnws haum yog. Fact: Tu siab, qhov no yog ib lo lus tsis tseeb uas tau raug perpetuated los ntawm aversive trainers. Txawm hais tias haum rau lub caj dab kom zoo khawb rau hauv cov tawv nqaij rhiab nyob ib ncig ntawm lub caj dab, uas ua rau muaj kev puas tsuaj loj rau cov thyroid, esophagus, thiab trachea.
Tus qauv ntawm metaformaldehyde yog dab tsi?
Nws yog cov khoom dawb nrog cov ntxhiab tsw zoo li chloroform. Nws yog ib qho ruaj khov cyclic trimer ntawm formaldehyde, thiab ib qho ntawm peb trioxane isomers; nws cov pob txha molecular muajib lub nplhaib rau tus tswv cuab nrog peb cov pa roj carbon monoxide alternating nrog peb oxygen atoms.
Dab tsi yog kev xav ntawm autonomists dab tsi yog qhov kev xav ntawm kev zoo nkauj ntawm kev coj ncaj ncees?
Kev lig kev cai, muaj ob txoj haujlwm tawm tsam kev xav txog kev coj ua raws li kev cai lij choj ntawm kev ntsuas kev ncaj ncees ntawm kev kos duab: 'kev coj ncaj ncees kev ncaj ncees Ethics lossis kev coj ncaj ncees yog ib ceg ntawm kev xav uas "
Dab tsi yog aniline xiav stained qauv hauv cov qauv nws yog ib qho hnyav?
Dab tsi yog aniline xiav-stained qauv hauv cov qauv? Nws yogstringy pawg hauv qab plab hnyuv epithelium uas txuas mus rau hauv lub villi. "Aniline xiav khi rau cov txheej txheem extracellular xws li cov fibers hauv lamina propria. Lamina propria yog lub npe ntawm cov ntaub so ntswg sib txuas hauv qab plab hnyuv epithelium.
Thaum lub sijhawm tsom xam ntawm tus qauv addie tus tsim qauv?
Tus qauv ADDIE yog cov txheej txheem dav dav uas ib txwm siv los ntawm cov kws tsim qauv qhia thiab cov neeg tsim kev cob qhia. Tsib theem- Kev tshuaj xyuas, Tsim, Kev Txhim Kho, Kev Ua Haujlwm, thiab Kev Ntsuam Xyuas - sawv cev rau cov lus qhia zoo, hloov tau yooj yim rau kev tsim cov kev cob qhia zoo thiab cov cuab yeej txhawb nqa kev ua tau zoo.
