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22.5: Ionization Constants of Weak Acids

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     Ionization Constants of Weak Acids
    Ionization Constants of Weak Acids
    Acid Formula Ka at 25 °C Lewis Structure
    acetic CH3CO2H 1.8 × 10−5 alt
    arsenic H3AsO4 5.5 × 10−3 alt
    alt 1.7 × 10−7
    alt 5.1 × 10−12
    arsenous H3AsO3 5.1 × 10−10 alt
    boric H3BO3 5.4 × 10−10 alt
    carbonic H2CO3 4.3 × 10−7 alt
    alt 4.7 × 10−11
    cyanic HCNO 2 × 10−4 alt
    formic HCO2H 1.8 × 10−4
    hydrazoic HN3 2.5 × 10−5
    hydrocyanic HCN 4.9 × 10−10  
    hydrofluoric HF 3.5 × 10−4  
    hydrogen peroxide H2O2 2.4 × 10−12 alt
    hydrogen selenide H2Se 1.29 × 10−4  
    HSe– 1 × 10−12  
    hydrogen sulfate ion alt 1.2 × 10−2 alt
    hydrogen sulfide H2S 8.9 × 10−8  
    HS– 1.0 × 10−19  
    hydrogen telluride H2Te 2.3 × 10−3  
    HTe– 1.6 × 10−11  
    hypobromous HBrO 2.8 × 10−9  
    hypochlorous HClO 2.9 × 10−8  
    nitrous HNO2 4.6 × 10−4 alt
    oxalic H2C2O4 6.0 × 10−2 alt
    alt 6.1 × 10−5
    phosphoric H3PO4 7.5 × 10−3 alt
    alt 6.2 × 10−8
    alt 4.2 × 10−13
    phosphorous H3PO3 5 × 10−2 alt
    alt 2.0 × 10−7
    sulfurous H2SO3 1.6 × 10−2 alt
    alt 6.4 × 10−8

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