Qhov sib txawv tseem ceeb ntawm carbonic acid thiab bicarbonate yog tias carbonic acid yog cov tshuaj nruab nrab, hos bicarbonate yog cov tshuaj tsis zoo.
Carbonic acid yog cov kua qaub uas tsis muaj zog uas tsim cov tshuaj thaum cov pa roj carbon dioxide yaj hauv dej, nrog rau cov tshuaj formula H2CO3. Bicarbonate tsim los ntawm kev sib xyaw ntawm peb cov pa oxygen atom, hydrogen atom, thiab carbon atom nrog cov tshuaj formula HCO3-.
Carbonic Acid yog dab tsi?
Carbonic acid yog H2CO3. Qee zaum, peb muab lub npe no rau cov kev daws teeb meem uas muaj cov pa roj carbon dioxide yaj hauv dej lossis dej carbonated. Qhov no yog vim cov dej carbonated muaj me me ntawm H2CO3. Tsis tas li ntawd, carbonic acid yog cov kua qaub tsis muaj zog, thiab nws tuaj yeem tsim ob hom ntsev xws li carbonates thiab bicarbonates. Cov molar mass ntawm no compound yog 62.024 g / mol.
Daim duab 01: Cov Qauv Tshuaj ntawm Carbonic Acid
Thaum carbon dioxide yaj hauv dej, nws nkag mus rau qhov sib npaug ntawm carbon dioxide thiab carbonic acid. Lub equilibrium yog raws li nram no:
CO2 + H2O ⟷ H2CO3
Yog tias peb ntxiv cov roj carbonic acid ntau dhau rau hauv lub hauv paus, nws muab bicarbonate. Tab sis, yog hais tias muaj ntau tshaj ntawm lub hauv paus, ces carbonic acid nyhav muab carbonated ntsev. Ntau precisely, carbonic acid yog ib tug carboxylic acid compound uas muaj ob pawg hydroxyl substituents txuas rau carbonyl carbon. Ntxiv mus, nws yog polyprotic acid, uas muaj peev xwm pub dawb protons. Nws muaj ob lub proton tshem tau, yog li nws tshwj xeeb yog diprotic.
YBicarbonate yog dab tsi?
Bicarbonate tsim los ntawm kev sib xyaw ntawm peb cov pa atoms, hydrogen atom, thiab carbon atom. Cov khoom ntawm kev sib xyaw ua ke no tuaj yeem yog ib qho ion lossis cov khoom sib txuas nrog cov hluav taws xob ntau dua li cov protons. Peb tuaj yeem piav qhia nws yog hom tshuaj muaj tshuaj lom neeg HCO3–.
Daim duab 02: Cov Qauv Tshuaj ntawm Bicarbonate Anion
Cov tshuaj no yog ib feem tseem ceeb ntawm lub cev pH buffering system, nyob rau hauv layman cov ntsiab lus: nws yog lub luag hauj lwm rau ua kom ib tug cov ntshav nyob rau hauv lub xeev uas tsis heev acidic los yog yooj yim heev. Tsis tas li ntawd, nws ua hauj lwm raws li ib txoj hauv kev ua kom lub plab zom mov hauv kev kuaj xyuas thaum lub plab zom mov tiav lawm. Tsis tas li ntawd, carbonic acid nyob rau hauv dej nag tsim bicarbonate ions thaum nws tsoo pob zeb. Qhov kev khiav ntawm bicarbonate ions no yog qhov tseem ceeb hauv kev ua kom lub voj voog carbon mus.
Qhov txawv ntawm Carbonic Acid thiab Bicarbonate yog dab tsi?
Carbonic acid yog cov kua qaub uas tsis muaj zog uas tsim cov tshuaj thaum carbon dioxide yaj hauv dej, thiab nws cov tshuaj formula yog H2CO3. Bicarbonate tsim los ntawm kev sib xyaw ntawm peb cov pa oxygen atom, hydrogen atom, thiab carbon atom nrog cov tshuaj formula HCO3-. Qhov sib txawv tseem ceeb ntawm carbonic acid thiab bicarbonate yog tias carbonic acid yog cov tshuaj nruab nrab, thaum bicarbonate yog cov tshuaj tsis zoo. Ntxiv mus, carbonic acid yog siv nyob rau hauv ua npuas ncauj, fizzy dej qab zib, kho dermatitides, nyob rau hauv lub qhov ncauj, thiab lwm yam, thaum bicarbonate yog siv nyob rau hauv cov zaub mov npaj xws li ci (raws li ib tug leavening agent), thiab nws muab lub peev xwm los tiv thaiv kev hloov hauv pH.
Cov lus qhia hauv qab no qhia txog qhov sib txawv ntawm carbonic acid thiab bicarbonate nyob rau hauv daim ntawv tabular rau ib sab ntawm kev sib piv.
Summary – Carbonic Acid vs Bicarbonate
Carbonic acid yog H2CO3. Bicarbonate tsim los ntawm kev sib xyaw ntawm peb cov pa oxygen atom, hydrogen atom thiab carbon atom, nrog rau cov tshuaj formula HCO3-. Qhov sib txawv tseem ceeb ntawm carbonic acid thiab bicarbonate yog tias carbonic acid yog cov tshuaj nruab nrab, thaum bicarbonate yog cov tshuaj tsis zoo.
