Qhov txawv ntawm tartaric acid thiab citric acid yog tartaric acid (cream of tartar, C 4 H 6 O6) yog diprotic whereas citric acid (C6H8 O7) yog triprotic. Tartaric acid yog muag raws li cov hmoov dawb thiab muaj cov dej tsis zoo solubility thaum citric acid yog ib qho tsis muaj ntxhiab tsw thiab muaj nyob hauv cov khoom siv crystalline.
Tartaric acid thiab citric acid yog cov tshuaj acidic vim tias lawv cov carboxylic pawg tuaj yeem tso cov hydrogen atoms hauv lawv mus rau nruab nrab ua rau nruab nrab acidic. Ob lub tebchaw no muaj nyob rau hauv cov nroj tsuag, tshwj xeeb tshaj yog nyob rau hauv txiv hmab txiv ntoo. Tartaric acid yog tam sim no nyob rau hauv grapes whereas citric acid muaj nyob rau hauv lemons.
YTartaric Acid yog dab tsi?
Tartaric acid, feem ntau hu ua cream ntawm tartar, yog ib qho organic compound uas muaj cov tshuaj formula C 4 H 6O 6 Lub npe IUPAC ntawm cov kua qaub no yog 2, 3-Dihydroxybutanedioic acid. Cov molar loj ntawm cov kua qaub no yog 150.08 g / mol thiab nws muaj cov dej solubility tsis zoo. Cov tshuaj muaj nyob rau hauv cov hmoov dawb thiab yog ib qho irritant nyob rau hauv daim ntawv concentrated.
Tartaric acid yog ib txwm muaj nyob rau hauv txiv hmab txiv ntoo thiab cov ntaub ntawv spontaneously thaum lub sij hawm winemaking txheej txheem siv grapes. Tsis tas li ntawd, nws muaj ntau hauv nws daim ntawv ntsev ntsev - potassium bitartrate. Baking hmoov, ib qho tshuaj tua kab mob hauv kev tsim khoom noj, yog ib qho sib xyaw ntawm sodium bicarbonate thiab potassium bitartrate. Ntxiv mus, tartaric acid ua haujlwm ua antioxidant hauv qee cov zaub mov.
Tartaric acid yog alpha-hydroxy-carboxylic acid. Qhov categorization no yog vim yog ob pawg carboxylic acid hauv cov molecule thiab ob pawg no muaj ib pab pawg hydroxyl ntawm lawv txoj haujlwm alpha carbon. Tsis tas li ntawd, cov molecule yog diprotic vim nws muaj peev xwm tshem tawm cov hydrogen atoms hauv ob pawg carboxylic li protons.
Daim duab 1: Tartaric Acid Molecule
Lub ntuj tshwm sim tartaric acid molecule yog ib qho chiral compound. Qhov ntawd txhais tau tias, cov molecule no muaj enantiomers; Nws muaj L thiab D enantiomers. Lub ntuj tshwm sim enantiomer yog L-(+)-tartaric acid. Cov enantiomers no ua haujlwm optically vim tias lawv tuaj yeem tig lub dav hlau-polarized lub teeb.
Citric Acid yog dab tsi?
Citric acid yog cov organic compound uas muaj cov tshuaj formula C6H8O7 IUPAC lub npe ntawm cov tshuaj no yog 2-Hydroxypropane-1, 2, 3-tricarboxylic acid. Nws molar mass yog 192.12 g / mol thiab melting point yog 156 ° C. Nws yog ib qho tshuaj tsw qab thiab muaj nyob rau hauv cov khoom siv crystalline.
Lub citric acid molecule muaj peb pawg carboxylic acid, qhia tias nws yog tribasic lossis triprotic, tab sis tsuas muaj ib pawg hydroxyl xwb. Cov kua qaub yog triprotic vim hais tias cov kua qaub molecule tuaj yeem tso peb protons ib molecule (peb pawg carboxylic acid tuaj yeem tso cov hydrogen atoms hauv lawv li protons).
Daim duab 2: Citric Acid Molecule
Citric acid yog ib txwm muaj nyob rau hauv txiv qaub thiab lwm yam txiv hmab txiv ntoo hauv tsev neeg Rutaceae, piv txwv li, citrus txiv hmab txiv ntoo. Nws yog daim tawv nqaij thiab qhov muag irritant. Cov khoom sib xyaw no muaj cov ntawv thov sib txawv, xws li cov khoom noj ntxiv, dej haus, tus neeg sawv cev chelate, cov khoom xyaw hauv cov tshuaj pleev ib ce, thiab lwm yam.
Qhov txawv ntawm Tartaric Acid thiab Citric Acid yog dab tsi?
YTartaric Acid vs Citric Acid |
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| Tartaric acid yog cov organic compound uas muaj cov tshuaj formula C 4H6O6. | Citric acid yog cov organic compound uas muaj cov tshuaj formula C6H8O7. |
| IUPAC Lub npe | |
| 2, 3-Dihydroxybutanedioic acid | 2-Hydroxypropane-1, 2, 3-tricarboxylic acid |
| Molar Mass | |
| 150.08g/mol | 192.12g/mol |
| Melting Point | |
| 206 °C (hauv kev sib xyaw ntawm cov neeg sib tw ntawm D thiab L enantiomers) | 153°C |
| Boiling Point | |
| 275°C | 310°C |
| Number of Carboxylic Acid pawg | |
| Muaj ob pawg carboxylic acid | Muaj peb pawg carboxylic acid |
| Nyob ntawm Enantiomers | |
| Ob daim ntawv enantiomer: L-tartaric acid thiab D-tartaric acid | Tsis muaj enantiomers |
| Nyob ntawm Hydroxyl Group | |
| Muaj ob pawg hydroxyl | muaj ib pawg hydroxyl |
| Natural Source | |
| Naturally muaj nyob rau hauv txiv hmab txiv ntoo xws li txiv hmab txiv ntoo | Muaj cov txiv hmab txiv ntoo ib txwm muaj |
| Cov khoom lag luam | |
| Sold as baking soda | Muag raws li cov khoom siv dawb crystalline |
| Applications | |
| Siv hauv kev lag luam kws tshuaj thiab ua tus neeg sawv cev chelate rau calcium thiab magnesium | Siv raws li cov khoom xyaw hauv zaub mov thiab dej haus, ua tus neeg sawv cev chelating, hauv kev tsim tshuaj thiab tshuaj pleev ib ce, thiab lwm yam. |
Summary – Tartaric Acid vs Citric Acid
Qhov sib txawv tseem ceeb ntawm tartaric acid thiab citric acid yog tias tartaric acid yog diprotic whereas citric acid yog triprotic. Qhov ntawd txhais tau tias, tartaric acid molecule muaj ob lub hydrogen atoms tso tawm raws li protons thaum citric acid molecule muaj peb hydrogen atoms tso tawm raws li protons. Ob qho acidic compounds no feem ntau muaj nyob rau hauv cov nroj tsuag, tshwj xeeb tshaj yog nyob rau hauv txiv hmab txiv ntoo; Tab sis, txiv hmab txiv ntoo yog qhov chaw ntawm tartaric acid thaum citrus txiv hmab txiv ntoo yog cov feem ntau ntawm citric acid.
