Print

Acid-Base Table

Acid NameConjugateAcidKapKaConjugate BaseBase Name
perchloric acid HClO4 >>1< 0 ClO41–perchlorate ion
hydrohalic acidHX (X = I, Br, Cl) >>1< 0 X1–halide ion
sulfuric acidH2SO4 >>1< 0 HSO41–hydrogen sulfate ion
nitric acidHNO3 >>1< 0 NO31–nitrate ion
hydronium ionH3O1+ 1.00.00 H2Owater
iodic acidHIO3 0.170.77 IO31–iodate ion
oxalic acidH2C2O4 5.9 × 10–21.23 HC2O41–hydrogen oxalate ion
sulfurous acidH2SO3 1.5 × 10–21.82 HSO31–hydrogen sulfite ion
hydrogen sulfate ionHSO41– 1.2 × 10–21.92 SO42–sulfate ion
phosphoric acidH3PO4 7.5 × 10–32.12 H2PO41–dihydrogen phosphate ion
hydrofluoric acidHF 7.2 × 10–43.14 F1–fluoride ion
nitrous acidHNO2 4.0 × 10–43.40 NO21–nitrite ion
lactic acidHC3H5O3 6.4 × 10–53.85 C3H5O31–lactate ion
formic acidHCHO2 1.8 × 10–43.74 CHO21–formate ion
hydrogen oxalate ionHC2O41– 6.4 × 10–54.19 C2O42–oxalate ion
hydrazoic acidHN3 1.9 × 10–54.72 N31–azide ion
acetic acidHC2H3O2 1.8 × 10–54.74 C2H3O21–acetate ion
carbonic acidH2CO3 4.3 × 10–76.37 HCO31–hydrogen carbonate ion
hydrogen sulfite ionHSO31– 1.0 × 10–77.00 SO32–sulfite ion
hydrosulfuric acidH2S 1.0 × 10–77.00 HS1–hydrogen sulfide ion
dihydrogen phosphate ionH2PO41– 6.2 × 10–87.21 HPO42–hydrogen phosphate ion
hypochlorous acidHClO 3.5 × 10–87.46 ClO1–hypochlorite ion
ammonium ionNH41+ 5.6 × 10–109.25 NH3ammonia
hydrocyanic acidHCN 4.0 × 10–109.40 CN1–cyanide ion
hydrogen carbonate ionHCO31– 4.7 × 10–1110.33 CO32–carbonate ion
hydrogen phosphate ionHPO42– 4.8 × 10–1312.32 PO43–phosphate ion
hydrogen sulfide ionHS1– 1.3 × 10–1312.89 S2–sulfide ion
waterH2O 1.0 × 10–1414.00 OH1–hydroxide ion
ammoniaNH3 <<10–14 NH21–amide ion
hydroxide ionOH1– <<10–14 O2–oxide ion

Copyright © 2014 Advanced Instructional Systems Inc. and NC State College of Sciences Foundation | Credits