Qhov kev txiav txim tseem ceeb no yog qhov tseem ceeb hauv npe raws li ntau dua qhov tseem ceeb yog pawg thawj coj ua haujlwm thiab nws feem ntau suav tias yog tus lej qis tshaj (tus locant). Koj yuav tsum kawm kom paub txog cov pab pawg ua haujlwm no tsis yog rau npe tab sis txhawm rau paub txog lawv cov kev cuam tshuam tom qab.
Yuav ua li cas yog qhov kev txiav txim ntawm qhov tseem ceeb ntawm pawg ua haujlwm?
Kev Txiav Txim Ua Ntej ntawm Pawg Ua Haujlwm hauv IUPAC Nomenclature
Carboxylic acid (ua ntej: carboxy-, suffix: -carboxylic acid lossis -oic acid) piv txwv: ethanoic acid. Sulfonic acid (prefix: sulfo-, suffix: -sulfonic acid) piv txwv: benzenesulfonic acid. Ester (prefix: alkoxycarbonyl-, suffix: -oate) piv txwv: methyl ethanoate.
Yuav ua li cas thiaj muaj qhov tseem ceeb hauv chemistry?
Thaum cov tebchaw muaj ntau dua ib pab pawg ua haujlwm, qhov kev txiav txim ua ntej txiav txim siab cov pab pawg twg muaj npe nrog ua ntej- piv txwv li hloov pauv -, lossis cov ntawv tom qab - piv txwv li ua ib feem ntawm niam txiv lub npe molecule. Cov pab pawg ua ntej tshaj plaws yuav siv cov lus xaus, nrog rau tag nrho lwm tus ua daim ntawv ua ntej.
Qhov twg muaj qhov tseem ceeb tshaj plaws hauv nomenclature ntawm cov organic tebchaw?
18.2: Pawg Ua Haujlwm Kev Txiav Txim Siab Ua Ntej Rau Organic Nomenclature
- CARBOXYLIC ACIDS (qhov tseem ceeb tshaj plaws ntawm cov pa roj carbon monoxide ua haujlwm).
- CARBOXYLIC ACID DERIVATIVES.
- Lwm pab pawg muaj OXYGEN LOSSISNITROGEN.
- ALKENES thiab ALKYNES. …
- LOWEST PRIORITY.
Qhov twg muaj qhov tseem ceeb dua Cl lossis Br?
Ib yam li ntawd, hauv -Cl thiab -Br, qhov tseem ceeb yog muab rau -Br vim atomic naj npawb ntawm Br ntau dua Cl. Yog li, raws li txoj cai ua ntu zus, tus lej 1 tau muab rau - Br & tus lej 2 rau - Cl. Nyob rau hauv daim duab 1, pawg ntawm qhov tseem ceeb tshaj plaws yog nyob rau sab nraud ntawm ob daim ntawv cog lus.
