Qhov sib txawv tseem ceeb ntawm ethanoic acid thiab propanoic acid yog tias ethanoic acid molecule muaj ob lub carbon atoms, whereas propanoic acid molecule muaj peb carbon atoms.
Ethanoic acid thiab propanoic acid yog ob qho tib si carboxylic acids muaj cov pab pawg ua haujlwm -COOH. Cov ntsiab lus ethanoic acid thiab propanoic acid yog IUPAC cov npe thiab acetic acid thiab propionic acid yog cov npe, feem.
YEthanoic Acid yog dab tsi?
Ethanoic acid lossis acetic acid yog cov organic compound uas muaj cov tshuaj CH 3 COOH. Cov tshuaj no yog qhov yooj yim tshaj plaws thib ob carboxylic acid. Nws muaj ib pawg methyl txuas nrog carboxylic acid. Lub systemic IUPAC lub npe ntawm acetic acid yog ethanoic acid. Hais txog cov khoom, ethanoic acid tshwm sim raws li cov kua tsis muaj xim uas muaj pungent, vinegar zoo li tsw. Tsis tas li ntawd, cov kua qaub no muaj qhov txawv qaub saj thiab. Ntxiv mus, chemically, ethanoic acid yog ib qho tsis muaj zog acid vim nws dissociates ib feem nyob rau hauv ib tug aqueous tov. Cov molar loj ntawm acetic acid yog 60.05 g / mol. Lub hauv paus conjugate ntawm cov kua qaub no yog acetate ion.
Daim duab 01: Pom ntawm Ethanoic Acid
Nyob hauv nws daim ntawv, acetic acid form chains los ntawm interconnecting cov molecules los ntawm hydrogen bonds. Nyob rau hauv nws vapor theem, muaj dimers ntawm acetic acid. Tsis tas li ntawd, hauv nws lub xeev ua kua, nws yog hydrophilic protic hnyav. Ntxiv mus, ntawm physiological pH tej yam kev mob, cov compound no muaj nyob rau hauv ib tug tag nrho ionized daim ntawv li acetate. Peb tuaj yeem tsim cov acetic acid hauv ob qho tib si hluavtaws thiab cov kab mob fermentation. Ntxiv rau cov no, nyob rau hauv txoj kev hluavtaws, acetic acid yog tsim los ntawm methanol carbonylation.
Peb tuaj yeem tsim cov acetic acid hauv kev lag luam hluavtaws lossis los ntawm kev lom neeg. Piv txwv li, peb tuaj yeem tsim cov acetic acid los ntawm carbonylation ntawm methanol, thiab peb tuaj yeem tsim cov kua qaub no los ntawm fermentation ntawm cov noob xws li kua cider, siv qos yaj ywm, mov, thiab lwm yam.
YPropanoic Acid yog dab tsi?
Propanoic acid lossis propionic acid yog qhov yooj yim thib peb carboxylic acid, muaj cov tshuaj formula CH3CH2CO 2H. Qhov sib xyaw no muaj peb cov pa roj carbon atoms rau propionic acid molecule. Cov molar loj ntawm cov tshuaj no yog 74.079 g / mol. Propionic acid muaj nyob rau hauv cov xim tsis muaj xim, oily kua ntawm tus qauv kub. Tsis tas li ntawd, qhov sib xyaw no muaj pungent, rancid tsw. Propionic acid yog miscible nrog dej, thiab peb tuaj yeem tshem tawm ntawm dej los ntawm kev ntxiv ntsev.
Daim duab 02: Propanoic Acid
Nyob rau hauv ob qho tib si kua thiab vapor theem, propionic acid tshwm sim li dimers. Tsis tas li ntawd, peb tuaj yeem tsim cov kua qaub no hauv kev lag luam-teev ntawm hydrocarboxylation ntawm ethylene nyob rau hauv muaj cov catalyst. Feem ntau, cov catalyst peb siv yog nickel carbonyl compounds.
Qhov txawv ntawm Ethanoic Acid thiab Propanoic Acid yog dab tsi?
Ethanoic acid thiab propanoic acid yog IUPAC cov npe rau acetic acid thiab propionic acid, raws li. Qhov sib txawv tseem ceeb ntawm ethanoic acid thiab propanoic acid yog tias ethanoic acid molecule muaj ob lub carbon atoms, whereas propanoic acid molecule muaj peb carbon atoms. Cov molar loj ntawm ethanoic acid yog 60.05 g / mol thaum molar loj ntawm propanoic acid yog 74.079 g / mol. Ntxiv mus, ethanoic acid yog cov kua tsis muaj xim thaum propanoic acid yog cov kua roj tsis muaj xim.
Cov duab hauv qab no qhia ntau qhov sib txawv ntawm ethanoic acid thiab propanoic acid hauv daim ntawv tabular.
Summary – Ethanoic Acid vs Propanoic Acid
Ethanoic acid thiab propionic acid yog carboxylic acid compounds. Qhov sib txawv tseem ceeb ntawm ethanoic acid thiab propanoic acid yog tias ethanoic acid molecule muaj ob lub carbon atoms, whereas propanoic acid molecule muaj peb carbon atoms.
