Qhov sib txawv tseem ceeb ntawm carbonate thiab bicarbonate yog cov carbonate ion muaj -2 hluav taws xob hos, lub bicarbonate muaj -1 hluav taws xob.
Tib neeg lub cev tsim cov pa roj carbon dioxide raws li cov khoom lag luam ntawm cov metabolism. Feem ntau ntawm cov pa roj carbon dioxide yaj hauv cov ntshav plasma thiab tam sim no nyob rau hauv daim ntawv ntawm bicarbonate. Carbonate thiab bicarbonate system yog lub luag haujlwm tseem ceeb hauv kev tswj hwm peb cov ntshav pH nqi, thiab lawv ua raws li qhov tsis nyob hauv peb cov ntshav. Thaum cov pa roj carbon dioxide yaj hauv dej, bicarbonate thiab carbonic acid tsim, thiab muaj qhov sib npaug ntawm cov tsiaj no.
YCarbonate yog dab tsi?
Carbonate yog ib qho inorganic ion uas muaj carbon atom thiab peb oxygen atoms. Nws muaj qhov tsis zoo divalent nqi (-2 hluav taws xob nqi). Carbonate ion muaj ib tug trigonal planar geometry, thiab nws qhov hnyav molecular yog 60 g mol-1.
Txawm hais tias Lewis qauv ntawm carbonate ion muaj ib qho carbon-oxygen ob daim ntawv cog lus thiab ob carbon-oxygen ib daim ntawv cog lus, nws tsis yog qhov tseeb qauv. Carbonate ion qhia resonance stabilization. Yog li ntawd, nws muaj ib tug hybrid qauv ntawm tag nrho cov resonance qauv. Yog li ntawd, tag nrho cov carbon-oxygen bonds muaj qhov ntev zoo sib xws, thiab cov pa atoms muaj ib feem tsis zoo nqi (li no, tag nrho cov pa atoms zoo ib yam.).
Daim duab 01: Cov qauv tshuaj lom neeg ntawm Carbonate Ion
Thaum carbon dioxide lossis bicarbonate yaj hauv dej, carbonate ions tsim. Thiab, qhov no ion yog nyob rau hauv sib npaug nrog bicarbonate ions. Lawm, nws txuas nrog lwm cov hlau ion lossis lwm qhov zoo ion los ua cov tebchaw. Muaj ntau hom pob zeb carbonate, xws li limestone (calcium carbonate), Dolomite (calcium- magnesium carbonate), potash (potassium carbonate) thiab lwm yam.
Tsis tas li ntawd, carbonate compounds ua lub luag haujlwm tseem ceeb hauv lub voj voog carbon. Thaum lub sij hawm, cov tebchaw uas muaj cov pa roj carbon hloov mus rau hauv cov pob zeb sedimentary thaum lawv tso rau lub sijhawm ntev. Tom qab ntawd, thaum cov pob zeb no yog huab cua, cov pa roj carbon dioxide raug tso tawm rov qab mus rau qhov chaw. Ib yam li ntawd, thaum cua sov cov tebchaw, lawv tso carbon dioxide yooj yim. Ntxiv mus, carbonate tebchaw yog ionic, thiab lawv yog insoluble nyob rau hauv dej.
YBicarbonate yog dab tsi?
Bicarbonate yog monovalent anion muaj ib hydrogen, ib carbon thiab peb oxygen atoms. Nws tsim los ntawm deprotonation ntawm carbonic acid. Nws muaj trigonal planar geometry nyob ib ncig ntawm lub hauv paus carbon atom. Bicarbonate ion muaj qhov hnyav molecular ntawm 61 g mol-1.
Daim duab 02: Resonance Structure ntawm Bicarbonate Ion
Ntxiv mus, qhov ion no qhia txog kev ruaj khov ntawm ob lub pa oxygen, uas tsis txuas nrog hydrogen. Hauv qhov xwm txheej, bicarbonate yog alkaline, thiab nws yog conjugate acid ntawm carbonate ion thiab conjugate puag ntawm carbonic acid. Tsis tas li ntawd, cov ions zoo tuaj yeem ua ke nrog cov pa oxygen tsis zoo hauv cov ion no thiab tsim cov ntsev ionic. Cov ntsev ntau tshaj plaws ntawm bicarbonate yog sodium bicarbonate, uas peb hu ua ci hmoov hauv kev siv txhua hnub. Ntxiv mus, bicarbonate tebchaw tso carbon dioxide thaum reacting nrog acids.
Qhov txawv ntawm Carbonate thiab Bicarbonate yog dab tsi?
Carbonate thiab bicarbonate yog inorganic anions. Qhov sib txawv tseem ceeb ntawm carbonate thiab bicarbonate yog tias cov carbonate ion muaj -2 hluav taws xob, qhov bicarbonate muaj -1 hluav taws xob. Ntxiv mus, vim muaj cov hydrogen atom, molar loj ntawm carbonate ion yog 60 g / mol thaum molar loj ntawm bicarbonate ion yog 61 g / mol.
Lwm qhov sib txawv tseem ceeb ntawm carbonate thiab bicarbonate yog tias, hauv cov xwm txheej yooj yim, yuav muaj ntau cov carbonate ions, whereas, bicarbonate ions yuav ntau dua hauv cov tshuaj tsis muaj zog. Tsis tas li ntawd, kev muaj peev xwm yaj hauv dej kuj ua rau muaj qhov sib txawv ntawm carbonate thiab bicarbonate. Qhov ntawd yog; cov tebchaw nrog carbonate ions tsis soluble hauv dej ntawm chav tsev kub thiab atmospheric siab. Txawm li cas los xij, ntau cov ntsev bicarbonate yog soluble hauv dej ntawm chav tsev kub.
Hauv qab no yog cov ntsiab lus ntawm qhov sib txawv ntawm carbonate thiab bicarbonate hauv daim ntawv tabular.
Summary – Carbonate vs Bicarbonate
Ob lub carbonate thiab bicarbonate yog ions uas muaj cov pa roj carbon thiab oxygen atoms. Txawm li cas los xij, bicarbonate ion muaj hydrogen atom ib yam nkaus. Yog li, qhov no hydrogen atom ua rau cov ion los ua monovalent anions thaum lub carbonate yog divalent anion. Hauv cov ntsiab lus, qhov sib txawv tseem ceeb ntawm carbonate thiab bicarbonate yog tias cov carbonate ion muaj -2 hluav taws xob, qhov bicarbonate muaj -1 hluav taws xob.
