Qhov sib txawv tseem ceeb ntawm aliphatic thiab aromatic carboxylic acid yog tias aliphatic carboxylic acid cov tebchaw muaj cov qauv kab hauv lawv pawg R, qhov uas muaj ntxhiab carboxylic acid muaj cov qauv cyclic nrog alternating ob thiab ib daim ntawv cog lus hauv nws pawg R.
Carboxylic acid yog cov organic compound uas muaj pawg ua haujlwm -COOH. Cov pab pawg ua haujlwm no feem ntau txuas nrog rau pawg R. Cov pab pawg R no tuaj yeem yog aliphatic lossis aromatic. Yog li, peb tuaj yeem txheeb xyuas ob hom carboxylic acids: aliphatic carboxylic acids thiab aromatic carboxylic acids.
Aliphatic Carboxylic Acid yog dab tsi?
Aliphatic carboxylic acid yog hydrocarbon uas muaj cov carboxylic acid ua haujlwm pab pawg txuas nrog cov saw hlau qhib lossis kaw cov saw hlau uas tsis muaj ntxhiab. Aliphatic carboxylic acid muaj ntau yam tshuaj uas tuaj yeem ua tau ntau yam kev lag luam. Feem ntau ntawm lawv tshwm sim, thiab lawv kuj ua haujlwm tseem ceeb hauv kev noj haus; peb tuaj yeem pom lawv ua cov neeg nruab nrab hauv cov txheej txheem biochemical.
Peb tuaj yeem hu ua aliphatic carboxylic acid raws li IUPAC nomenclature; cov npe tau muab los ntawm cov saw hlau ntev tshaj plaws uas muaj cov carboxylic acid ua haujlwm pab pawg los ntawm kev xa tawm qhov kawg -e los ntawm lub npe ntawm niam txiv alkane thiab ntxiv cov lus kawg -oic uas ua raws li lo lus "acid."Peb yuav tsum suav cov saw hlau uas pib nrog cov pa roj carbon ntawm pawg carboxyl.
Ib qho aliphatic carboxylic acid compound tuaj yeem saturated lossis tsis txaus. Qhov no txhais tau hais tias yog cov aliphatic carboxylic acid compound muaj ob lossis triple daim ntawv cog lus ntawm cov pa roj carbon atoms nyob rau hauv lub ntsiab carbon saw, peb hu nws unsaturated, whereas saturated aliphatic carboxylic acids tsuas muaj ib daim ntawv cog lus ntawm carbon atoms nyob rau hauv lub carbon saw.
Aromatic Carboxylic Acid yog dab tsi?
Aromatic carboxylic acid yog hydrocarbon uas muaj cov carboxylic acid ua haujlwm pab pawg txuas nrog lub nplhaib kaw uas muaj kev sib hloov ob thiab peb daim ntawv cog lus. Qhov tseem ceeb tshaj plaws uas muaj ntxhiab dicarboxylic acids uas peb paub yog phthalic acid, isophthalic acid, thiab terephthalic acid. Peb cov qauv no txawv ntawm ib leeg raws li cov qauv ortho, meta, thiab para isomeric.
Nws tuaj yeem npaj cov tshuaj tsw qab carboxylic acid los ntawm oxidation ntawm alkylbenzenes. Lub zog oxidation ntawm alkyl benzene compound nrog acidic los yog alkaline poov tshuaj permanganate ntawm chromic acid tuaj yeem ua rau tsim cov tshuaj tsw qab carboxylic acid.
Feem ntau, cov tshuaj tsw qab muaj zog dua li aliphatic acids vim tias lub nplhaib uas muaj ntxhiab ua rau muaj zog hydrogen bonds ntawm molecules. Peb tuaj yeem faib cov tshuaj tsw qab carboxylic acids rau hauv cov pab pawg raws li cov khoom hloov pauv uas tau sib koom nrog cov carboxylic carbon atom. Ntxiv mus, ib qho aromatic acid muaj ib pawg aryl uas khi rau pawg carboxyl.
Qhov txawv ntawm Aliphatic thiab Aromatic Carboxylic Acid yog dab tsi?
Qhov sib txawv tseem ceeb ntawm aliphatic thiab aromatic carboxylic acid yog tias aliphatic carboxylic acid compounds muaj cov qauv kab hauv lawv pawg R, qhov uas muaj ntxhiab carboxylic acid muaj cov qauv cyclic nrog alternating ob thiab ib daim ntawv cog lus hauv nws pawg R. Tsis tas li ntawd, muaj peev xwm ua tau ib qho saturated los yog unsaturated cov ntaub ntawv ntawm aliphatic carboxylic acids whereas aromatic carboxylic acids tsuas muaj unsaturated cov ntaub ntawv.
Cov hauv qab no qhia txog qhov sib txawv ntawm aliphatic thiab aromatic carboxylic acid nyob rau hauv daim ntawv tabular rau kev sib piv ntawm ib sab.
Summary – Aliphatic vs Aromatic Carboxylic Acid
Carboxylic acid tebchaw yog cov tseem ceeb heev hydrocarbon tebchaw. Peb tuaj yeem faib lawv ua ob pawg; Lawv yog aliphatic thiab aromatic carboxylic acids. Qhov sib txawv tseem ceeb ntawm aliphatic thiab aromatic carboxylic acid yog tias aliphatic carboxylic acid compounds muaj cov qauv kab hauv lawv pawg R thaum uas muaj ntxhiab carboxylic acid muaj cov qauv cyclic nrog alternating ob thiab ib daim ntawv cog lus hauv nws pawg R.
