Qhov sib txawv tseem ceeb ntawm oxalic acid thiab citric acid yog tias oxalic acid muaj ob pawg carboxylic ua haujlwm thiab sib piv cov tshuaj tsis tshua muaj tshuaj, qhov citric acid muaj peb pawg carboxylic acid, yog li cov tshuaj muaj zog heev.
Oxalic acid thiab citric acid yog hom carboxylic acid compounds vim lawv muaj carboxylic acid ua haujlwm. Cov kua qaub no muaj cov lej sib txawv ntawm pawg carboxylic acid ib molecule.
Oxalic Acid yog dab tsi?
Oxalic acid yog cov organic acidic compound uas muaj cov tshuaj formula H2C2O4 Cov tshuaj no muaj nyob hauv cov khoom tsis muaj xim uas tuaj yeem yaj hauv dej yooj yim. Cov kua qaub no yog dicarboxylic acid vim nws yog tsim los ntawm kev sib xyaw ntawm ob pawg carboxylic acid; Qhov tseeb, nws yog qhov yooj yim tshaj plaws dicarboxylic acid. Tsis tas li ntawd, nws muaj lub zog acid siab, thiab peb tuaj yeem hu nws ua tus neeg sawv cev muaj zog. Lub hauv paus conjugate ntawm oxalic acid yog oxalate ion. Feem ntau, oxalic acid tshwm sim hauv daim ntawv dihydrate, thiab nws tshwm sim hauv qee yam khoom noj. Cov molar loj ntawm daim ntawv anhydrous ntawm no acidic compound yog 90 g / mol.
Daim duab 1: Cov Qauv Tshuaj ntawm Oxalic Acid
Peb tuaj yeem tsim oxalic acid los ntawm oxidation ntawm carbohydrates los yog qabzib siv nitric acid los yog cua nyob rau hauv lub xub ntiag ntawm vanadium pentoxide. Muaj ob lub polymorphs ntawm oxalic acid qhov twg ib tug polymorphic qauv muaj ib tug saw-zoo li cov qauv vim muaj cov hydrogen bonds thaum lwm yam polymorphic qauv nyob rau hauv daim ntawv-zoo li cov qauv.
Thaum xav txog kev siv cov oxalic acid, nws yog qhov tseem ceeb hauv kev tu thiab tshuaj dawb, ua cov tshuaj reagent hauv extractive metallurgy, hauv cov txheej txheem txhuas anodizing, thiab lwm yam.
Citric Acid yog dab tsi?
Citric acid yog cov organic acid tsis muaj zog muaj cov tshuaj formula C6H8O7Nws tshwm sim hauv cov txiv hmab txiv ntoo citrus. Muaj ntau ntau yam kev siv ntawm no compound. Yog li ntawd, cov tuam txhab lag luam nyiam tsim cov citric acid ntau txhua xyoo. Qee cov ntawv thov tseem ceeb suav nrog siv los ua cov kua qaub, ua kom tsw qab, thiab ua tus neeg sawv cev chelate. Muaj ob hom ntawm cov kua qaub no raws li daim ntawv anhydrous thiab daim ntawv monohydrated.
Daim ntawv anhydrous ntawm citric acid yog daim ntawv tsis muaj dej. Nws tshwm raws li cov khoom tsis muaj xim thiab tsis muaj ntxhiab thiab. Tsis muaj dej hauv nws daim ntawv qhuav, granulated. Peb tuaj yeem tsim cov tshuaj no los ntawm crystallization los ntawm dej kub.
Cov citric acid anhydrous yog tsim los ntawm daim ntawv monohydrate ntawm 78 ° C. Qhov ceev ntawm daim ntawv anhydrous yog 1.665 g / cm3. Nws melts ntawm 156 ° C, thiab lub boiling point ntawm no compound yog 310 ° C. Cov tshuaj formula ntawm no compound yog C6H8O7, thaum molar mass yog 192.12 g. /mol.
Daim duab 02: Cov Qauv Tshuaj ntawm Citric Acid
Monohydrate citric acid yog cov dej uas muaj citric acid. Nws muaj ib tug dej molecule txuam nrog ib tug citric acid molecule. Peb hu cov dej no yog dej ntawm crystallization. Daim ntawv no ntawm citric acid yog tsim los ntawm crystallization los ntawm dej txias.
Qhov txawv ntawm Oxalic Acid thiab Citric Acid yog dab tsi?
Oxalic acid yog cov organic acidic compound uas muaj cov tshuaj formula H2C2O4, hos Citric acid yog cov organic acid uas tsis muaj zog muaj cov tshuaj formula C6H8O7Qhov sib txawv tseem ceeb ntawm oxalic acid thiab citric acid yog tias oxalic acid muaj ob pawg carboxylic ua haujlwm thiab sib piv cov tshuaj tsis tshua muaj tshuaj, qhov citric acid muaj peb pawg carboxylic acid, yog li cov tshuaj muaj zog heev.
Cov hauv qab no qhia txog qhov sib txawv ntawm oxalic acid thiab citric acid hauv daim ntawv tabular rau ib sab ntawm kev sib piv.
Summary – Oxalic Acid vs Citric Acid
Oxalic acid yog cov organic acidic compound uas muaj cov tshuaj formula H2C2O4, whereas citric acid yog ib qho tsis muaj zog organic acid uas muaj cov tshuaj formula C6H8O7 Qhov sib txawv tseem ceeb ntawm oxalic acid thiab citric acid yog tias oxalic acid muaj ob pawg carboxylic ua haujlwm thiab sib piv cov tshuaj tsis tshua muaj tshuaj, qhov citric acid muaj peb pawg carboxylic acid, yog li tshuaj lom neeg muaj zog..
