Formule utile pentru calcul a pH-ului soluiilor apoase

Formule utile pentru calcul a pH-ului soluiilor apoaseCategorieFormula de calculExemple

Acizi taripH = lg[H3O+]HCl, HNO3, HClO4, H2SO4 (n I-a treapt de ionizare)

Baze taripH = 14+lg[HO-]NaOH, KOH

Acizi slabi, monoprotici

HF, CH3COOH, HCOOH, HCN, HNO2, NH4+, fenol

Acizi slabi, poliprotici

H2C2O4, H2O.CO2 (H2CO3), H3PO4, H3PO3, H2S, acid citric

Baze slabe, monoprotice

F, CH3COO, HCOO, CN, NO2, NH3, RNH2,

Baze slabe, poliprotice

C2O42, CO32, PO43, S2; citrat

Amfolii acido-bazici

HCO3, HC2O4, H2PO4, HPO42, HS

Soluii tampon

HF/F; NH4+/NH3; HCOOH/HCOO; HCN/CN; HNO2/NO2; H3PO4/H2PO4; H2PO4/HPO42; HPO42/PO44; H2CO3/HCO3; HCO3/CO32; CH3COOH/CH3COO; H2C2O4/HC2O4; HC2O4/C2O42;

Soluie

Soluie (Na)

Soluie (Na2)

Soluie (Na3PO4)

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