Acid Ionization Constants at 25C Name of Acid Ionization Equation K a Sulfuric acid H 2 SO
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Name of Acid | Ionization Equation | Ka |
---|---|---|
Sulfuric acid | H2SO4 ⇌ H+ + HSO4− HSO4− ⇌ H+ + SO42− | very large 1.3 × 10−2 |
Oxalic acid | H2C2O4 ⇌ H+ + HC2O4− HC2O4− ⇌ H+ + C2O42− | 6.5 × 10−2 6.1 × 10−5 |
Phosphoric acid | H3PO4 ⇌ H+ + H2PO4− H2PO4− ⇌ H+ + HPO42− HPO42− ⇌ H+ + PO43− | 7.5 × 10−3 6.2 × 10−8 4.8 × 10−13 |
Hydrofluoric acid | HF ⇌ H+ + F− | 7.1 × 10−4 |
Nitrous acid | HNO2 ⇌ H+ + NO2− | 4.5 × 10−4 |
Benzoic acid | C6H5COOH ⇌ H+ + C6H5COO− | 6.5 × 10−5 |
Acetic acid | CH3COOH ⇌ H+ + CH3COO− | 1.8 × 10−5 |
Carbonic acid | H2CO3 ⇌ H+ + HCO3− HCO3− ⇌ H+ + CO32− | 4.2 × 10−7 4.8 × 10−11 |
Hydrocyanic acid | HCN ⇌ H+ + CN− | 4.9 × 10−10 |
Name of Base | Ionization Equation | Kb |
---|---|---|
Methylamine | CH3NH2 + H2O ⇌ CH3NH3+ + OH− | 5.6 × 10−4 |
Ammonia | NH3 + H2O ⇌ NH4+ + OH− | 1.8 × 10−5 |
Pyridine | C5H5N + H2O ⇌ C5H5NH+ + OH− | 1.7 × 10−9 |
Acetate ion | CH3COO− + H2O ⇌ CH3COOH + OH− | 5.6 × 10−10 |
Fluoride ion | F− + H2O ⇌ HF + OH− | 1.4 × 10−11 |
Urea | H2NCONH2 + H2O ⇌ H2CONH3+ + OH− | 1.5 × 10−14 |
Related Book For
Fundamentals of Thermodynamics
ISBN: 978-0471152323
6th edition
Authors: Richard E. Sonntag, Claus Borgnakke, Gordon J. Van Wylen
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