CO3 H2CO3 HCO3


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PDF CO2 + H2O ↔ H2CO3 ↔ H+ + CO3

↔ H+ + CO3- PH = Pk + log HCO3- H2CO3 H+ = Ka x 0 03 x PaCO2 (40) H2CO3 = 0 03 x PaCO2 (40) HCO3- (24 à28) Equilibre constant grâce système tampons rein 

PDF Equilibre acidobasique

pH = 610 + log [HCO3 - ] / [H2CO3] Page 7 pH = 61 + log [HCO3-] apCO 2 ▫[HCO3 -] = composante métabolique et rénale ▫ pCO2 = composante pulmonaire

PDF CO2 / H2CO3 / HCO3

- / CO3 HCO3 - (bicarbonate) et CO3 2- (carbonate) Il se forme en particulier dans l'eau par solvatation du dioxyde de carbone : CO2 (aq) + H2O(l) H2CO3 

PDF Les réactions acido-basiques

CO2H2O(aq) = HCO3 -(aq) + H+ 3) Pour les bases fortes Les solutions d'hydroxyde de sodium ou de potassium -(aq) / CO3 2-(aq) HCO3 -(aq) = CO3 2-(aq) + 

PDF COMMENT ÉCRIRE UN COUPLE ACIDE‑BASE ?

CO2 H2O ou H2CO3 : dioxyde de carbone dissous ou acide carbonique HCO3 – : ion hydrogénocarbonate CO3 2– : ion carbonate

PDF Chapitre 1 Acides et bases

– vaut 64 à 25◦C couple HCO3 – / CO3 2– : CO3 2– + H+ = HCO3 – couple H2O / HO– : H2O = HO– + H+ CO3 2– + H2O ⇌ HCO3 – + HO– Le pKa du couple HCO3

PDF Chimie équilibres acido-‐basique

3 mar 2015 · Quand la solution devient saturée en H2CO3 le gaz CO2 s'échappe de -‐ : pKA1 = 6 HCO3-‐ / CO3 2-‐ : pKA2 = 10 masses molaires en g mol 

PDF ACIDIFICATION DE LOCÉAN

Le CO2 dissous réagit avec l'eau : CO2 + H2O H2CO3 L'acide carbonique se dissocie : H2CO3 HCO3 - + H + L'ion bicarbonate aussi : HCO3 - CO3 2- + H 

PDF Équilibre calco-carbonique en termes physico-chimiques

28 jui 2017 · H2CO3 + OH- ---->HCO3 - + H2O HCO3 - + OH----->CO3 2- + H2O 1/2(pK1 HCO3- CO3-- Les formes de l'acide carbonique Répartition des

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