Video: Vim li cas cov pab pawg carbonyl tseem ceeb?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Lawv tuaj yeem pom hauv ntau qhov sib txawv pab pawg , xws li aldehydes, ketones, esters, thiab ntau ntxiv. A carbonyl pawg tuaj yeem ua kom lub melting los yog boiling point ntawm ib tug compound. Nws tau piav raws li polar thiab reactive, thiab tus nqi tsis zoo thiab zoo ntawm a carbonyl pab txhawb rau polarity.
Yog li ntawd, pawg carbonyl ua dab tsi?
Nyob rau hauv biology, a carbonyl pawg nyob rau hauv ib qho molecule tso cai rau nws mus rau ntau yam kev cuam tshuam tsim nyog los tswj lub neej. Muaj ntau hom roj ntsha molecules muaj a carbonyl pawg , uas tso cai rau lub cell muaj peev xwm tsim tshiab molecules thiab hloov cov molecule nrog ib tug xov tooj ntawm lwm yam functional pab pawg.
Ib sab saum toj no, pawg carbonyl tsim li cas? Nyob rau hauv carboxylic acids thiab lawv derivatives, lub carbonyl pawg yog txuas rau ib qho ntawm halogen atoms los yog rau pab pawg muaj cov atom xws li oxygen, nitrogen, lossis sulfur. Cov atoms no cuam tshuam rau carbonyl pawg , tsim kev ua haujlwm tshiab pab pawg nrog cov khoom tshwj xeeb.
Tsis tas li ntawd, qhov xwm txheej ntawm carbonyl pawg yog dab tsi?
A carbonyl pawg yog chemically organic ua haujlwm pab pawg tsim los ntawm cov pa roj carbon atom muab ob npaug rau cov pa oxygen atom [C = O] Qhov yooj yim tshaj plaws carbonyl pawg yog aldehydes thiab ketones feem ntau txuas rau lwm cov pa roj carbon. Cov qauv no tuaj yeem pom nyob rau hauv ntau yam aromatic tshuaj sib xyaw contributing rau tsw thiab saj.
Vim li cas carbonyl pawg reactive?
Vim muaj ntau dua electronegativity ntawm oxygen, lub carbonyl pawg yog polar, thiab aldehydes thiab ketones muaj lub sij hawm loj molecular dipole (D) dua li alkenes. Lub polarity ntawm carbonyl pawg kuj muaj qhov cuam tshuam loj heev rau nws cov tshuaj reactivity , piv nrog cov tsis-polar ob daim ntawv cog lus ntawm alkenes.
Pom zoo:
Vim li cas qhov tseem ceeb ntawm qhov tseem ceeb?
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Vim li cas cov nuj nqis tseem ceeb tseem ceeb thaum qhia txog kev ntsuas?
Cov duab tseem ceeb yog qhov tseem ceeb los qhia qhov tseeb ntawm koj cov lus teb. Qhov no yog qhov tseem ceeb hauv kev tshawb fawb thiab engineering vim tias tsis muaj cov cuab yeej ntsuas tuaj yeem ua qhov ntsuas nrog 100% precision. Siv cov nuj nqis tseem ceeb tso cai rau tus kws tshawb fawb paub tias cov lus teb meej npaum li cas, lossis qhov tsis paub meej npaum li cas
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Vim li cas lawv thiaj hu ua pab pawg tseem ceeb?
Cov pab pawg tseem ceeb yog nyob deb ntawm cov ntsiab lus ntau tshaj plaws - tsis yog hauv ntiaj teb nkaus xwb, tab sis thoob plaws ntiaj teb. Vim li no, lawv qee zaum hu ua 'tus neeg sawv cev cov ntsiab lus. ' Cov pab pawg tseem ceeb muaj nyob hauv s- thiab p-blocks, txhais tau hais tias lawv cov kev teeb tsa hluav taws xob yuav xaus rau hauv s lossis p
Dab tsi yog qhov sib txawv tseem ceeb ntawm kev xaiv cov phooj ywg thiab kev xaiv pab pawg?
Kev xaiv Kin, hais lus ntxhib, yog kev xaiv ntawm qhov sib txawv ntawm qhov tsis ncaj ncees (rb ≠ 0) uas tshwm sim hauv cov neeg siab-K (cov pej xeem uas muaj kev sib raug zoo ntawm cov txheeb ze); whereas kev xaiv pab pawg, kwv yees hais lus, yog kev xaiv ntawm qhov sib txawv ntawm qhov tsis muaj zog (rb ≠ 0) uas tshwm sim hauv cov neeg siab-G (cov pej xeem