Sodium Phosphate Monobasic vs Dibasic | Sodium Phosphate Dibasic vs Sodium Phosphate Monobasic | Monosodium Phosphate vs Disodium Phosphate |
Ib lub phosphorus atom yog sib koom nrog plaub oxygens, tsim ib -3 polyatomic anion. Vim yog ib daim ntawv cog lus thiab ob daim ntawv cog lus, ntawm P thiab O, phosphorus muaj +5 oxidation xeev nyob rau hauv no. Nws muaj tetrahedral geometry. Hauv qab no yog cov qauv ntawm phosphate anion.
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Phosphate anion tuaj yeem ua ke nrog cov cations sib txawv, los tsim ntau cov ionic compounds. Sodium phosphate yog ntsev zoo li qhov twg peb sodium ions yog electrostatistically bonded nrog ib tug phosphate anion. Trisodium phosphate yog cov xim dawb dawb, uas yog yaj hauv dej. Thaum soluble hauv dej, nws tsim cov tshuaj alkaline. Sodium phosphate monobasic thiab sodium phosphate dibasic yog ob qho tib si ntawm sodium thiab phosphate. Rau cov kua qaub, peb txhais lub sij hawm monobasic li "ib qho kua qaub, uas tsuas muaj ib qho proton uas tuaj yeem pub dawb rau lub hauv paus thaum lub sij hawm cov tshuaj tiv thaiv acid." Ib yam li ntawd, dibasic rau cov kua qaub txhais tau tias muaj ob lub protons, uas tuaj yeem pub dawb rau lub hauv paus. Tab sis thaum xav txog ob lo lus hais txog ntsev, lub ntsiab lus txawv kiag li. Ib qho ntsev monobasic hais txog ntsev, uas tsuas muaj ib qho atom ntawm cov hlau tsis zoo. Thiab dibasic ntsev txhais tau tias muaj ob qho tib si hlau ions. Hauv qhov no, lub univalent hlau ion yog sodium cation. Txij li cov no yog cov ntsev, lawv yooj yim yaj hauv dej thiab tsim cov tshuaj alkaline. Cov tebchaw no yog muag hauv cov ntawv hydrous thiab anhydrous. Monobasic thiab dibasic sodium phosphate ua ke yog ib qho tseem ceeb heev nyob rau hauv cov kab mob lom raws li ib tug tsis. Tsis tas li ntawd, kev kho mob ob qho no yog siv los ua saline laxative, los kho cem quav.
Sodium phosphate monobasic
Sodium phosphate monobasic lossis monosodium phosphate muaj cov qauv molecular ntawm NaH2PO 4. Cov molar pawg ntawm cov compound yog 120 g mol-1 Cov anion hauv cov molecule no tsis yog trivalent phosphate anion, tab sis H 2 PO4– anion. Cov anion no tau muab los ntawm phosphate ion qhov twg ob lub hydrogens sib koom nrog ob lub pa oxygen tsis zoo. Xwb, ntawm sab nraud nws tau muab los ntawm kev tshem tawm ib qho proton los ntawm phosphoric acid (H3PO4). Cov phosphate anion thiab H2PO4- anions nyob rau hauv equilibrium, hauv aqueous media. Sodium phosphate monobasic muaj nyob rau hauv cov xim tsis muaj xim lossis hmoov dawb. Nws yooj yim yaj hauv dej, tab sis tsis yaj hauv cov kuab tshuaj organic xws li cawv. PKa ntawm qhov no yog nyob nruab nrab ntawm 6.8-7.20. Cov tshuaj no tuaj yeem tsim tau thaum phosphoric acid reacts nrog sodium ntsev zoo li sodium halide.
Sodium phosphate dibasic
Cov tshuaj no tseem hu ua disodium phosphate thiab muaj cov mis molecular ntawm Na2HPO4. Cov molar loj ntawm cov compound yog 142 g mol-1 Thaum ob lub sodium cations hloov cov hydrogen atoms hauv phosphoric acid, sodium phosphate dibasic tau txais. Yog li hauv chav kuaj peb tuaj yeem ua qhov sib xyaw no los ntawm kev ua haujlwm ntawm ob qhov sib npaug ntawm sodium hydroxide nrog ib qho sib npaug ntawm phosphoric acid. Lub compound yog dawb crystalline khoom, thiab nws yooj yim dissolves nyob rau hauv dej. Cov pH ntawm cov kua dej no yog ib qho txiaj ntsig, uas yog nyob nruab nrab ntawm 8 thiab 11. Cov ntsev no yog siv rau kev ua noj, thiab ua tshuaj laxative.
Dab tsi yog qhov txawv ntawm Sodium phosphate monobasic thiab sodium phosphate dibasic?
• Sodium phosphate monobasic muaj cov tshuaj formula NaH2PO4, thiab sodium phosphate dibasic muaj cov tshuaj formula ntawm Na. 2HPO4.
• Qhov hnyav molecular ntawm sodium phosphate dibasic siab dua li ntawm sodium phosphate monobasic.
• Thaum sodium phosphate dibasic dissolves hauv dej, lub hauv paus yog siab dua nyob rau hauv nruab nrab tshaj li thaum sodium phosphate monobasic dissolves nyob rau hauv dej.
