Qhov sib txawv tseem ceeb ntawm malonic acid thiab succinic acid yog cov qauv malonic acid muaj ib qho carbon atom ntawm ob pawg carboxylic acid ua haujlwm, whereas succinic acid muaj ob lub atoms ntawm ob pawg carboxylic acid.
Ob leeg malonic acid thiab succinic acid yog dicarboxylic acids. Qhov no txhais tau tias cov tebchaw no muaj ob pawg carboxylic acid ua haujlwm rau ib lub molecule.
Malonic Acid yog dab tsi?
Malonic acid yog cov organic compound, thiab nws yog ib qho yooj yim dicarboxylic acid. Lub npe IUPAC ntawm cov tshuaj no yog propanedioic acid. Cov tshuaj formula ntawm cov tshuaj no yog CH2 (COOH) 2. Cov molar loj ntawm cov khoom no yog 104.06 g / mol. Muaj cov ntaub ntawv ionized ntawm malonic acid nrog rau esters thiab ntsev uas tau sau npe hu ua malonates.
Daim duab 01: Cov Qauv Tshuaj ntawm Malonic Acid
Cov tshuaj acidic no tshwm sim hauv ntau yam khoom noj xws li txiv hmab txiv ntoo thiab zaub. Feem ntau, citrus txiv hmab txiv ntoo zus nyob rau hauv ua liaj ua teb muaj qib siab malonic acid ntau dua li uas tau cog los ntawm kev ua liaj ua teb. Cov kua qaub no tau pom thawj zaug los ntawm Fab Kis kws tshuaj Victor Dessaignes hauv xyoo 1858 los ntawm oxidation ntawm malic acid. Peb tuaj yeem txiav txim siab cov qauv ntawm malonic acid los ntawm X-ray crystallography.
Daim duab 02: Kev Npaj ntawm Malonic Acid
Classically, peb tuaj yeem npaj malonic acid siv chloroacetic acid ua tus pib. Peb xav tau sodium carbonate thiab sodium cyanide ua reactants. Ua ntej, sodium carbonate generates sodium ntsev ntawm chloroacetic acid, uas ces reacts nrog sodium cyanide muab sodium ntsev ntawm cyanoacetic acid. Cov tshuaj tiv thaiv no tshwm sim los ntawm kev hloov pauv nucleophilic. Tom qab ntawd, cov pab pawg nitrile tau txais hydrolysis nrog rau sodium hydroxide, tsim sodium malonate. Peb tuaj yeem tau txais malonic acid los ntawm cov khoom no los ntawm acidification.
YSuccinic Acid yog dab tsi?
Succinic acid yog cov tshuaj dicarboxylic acid uas muaj cov tshuaj formula (CH2)2(COOH)2. Cov tshuaj no muaj ob lub atoms sib cais cov carboxylic acid functional pawg. Lub npe ntawm cov tshuaj no los ntawm Latin lub npe succinum, uas yog hais txog "amber." Feem ntau, cov khoom no tshwm sim hauv nws daim ntawv anionic thaum nws nyob hauv cov kab mob. Lub xeev anionic no hu ua succinate. Cov anion no muaj ntau yam kev siv tshuaj lom neeg los ua cov metabolic nruab nrab uas zoo li hloov mus rau hauv fumarate los ntawm succinate dehydrogenase enzyme kev ua haujlwm thaum lub sij hawm xa hluav taws xob thauj khoom. Cov txheej txheem no koom nrog hauv kev tsim cov ATP.
Daim duab 03: Cov Qauv Tshuaj ntawm Succinic Acid
Succinic acid zoo nkaus li cov khoom dawb, tsis muaj ntxhiab tsw muaj kua qaub heev. Thaum nws yog nyob rau hauv ib tug aqueous tov, succinic acid nyhav ionize, tsim nws conjugate puag, lub succinate ion. Qhov no yog diprotic acid, muab ob protons rau cov tshuaj.
Thaum xav txog kev lag luam-kev tsim khoom ntawm succinic acid, ntau txoj hauv kev suav nrog hydrogenation ntawm maleic acid, oxidation ntawm 1, 4-butanediol, thiab carbonylation ntawm ethylene glycol. Txawm li cas los xij, peb tuaj yeem tsim succinate siv butane thiab maleic anhydride. Keeb kwm, tib neeg tau txais cov tshuaj no acidic los ntawm amber los ntawm distillation kom tau txais tus ntsuj plig amber.
Qhov txawv ntawm Malonic Acid thiab Succinic Acid yog dab tsi?
Ob leeg malonic acid thiab succinic acid yog dicarboxylic acids. Qhov ntawd txhais tau hais tias ob lub tebchaw no muaj ob pawg carboxylic acid ua haujlwm rau ib lub molecule. Qhov sib txawv tseem ceeb ntawm malonic acid thiab succinic acid yog tias malonic acid qauv muaj ib qho carbon atom ntawm ob pawg carboxylic acid ua haujlwm, whereas succinic acid muaj ob lub atoms ntawm ob pawg carboxylic acid.
Cov lus qhia hauv qab no nthuav tawm qhov sib txawv ntawm malonic acid thiab succinic acid hauv daim ntawv.
Summary – Malonic Acid vs Succinic Acid
Malonic acid thiab succinic acid yog dicarboxylic acids. Qhov no txhais tau tias ob lub tebchaw no muaj ob pawg carboxylic acid ua haujlwm rau ib lub molecule. Qhov sib txawv tseem ceeb ntawm malonic acid thiab succinic acid yog tias malonic acid qauv muaj ib qho carbon atom ntawm ob pawg carboxylic acid ua haujlwm, whereas succinic acid muaj ob lub atoms ntawm ob pawg carboxylic acid.
