Acid-Base Strengths
  Acid pKa Conjugate Base  

HCl -7 Cl -
H2SO4 -5 HSO4-
H3O + -2 H2O
H3PO4 2 H2PO4-
RCO2H 5 RCO2-
H2CO3 6 HCO3-
NH4+ 9 NH3
HCO3- 10 CO3-2
H2O 16 HO -
RCH2OH 16 RCH2O -
R2CHOH 17 R2CHO -
R3COH 18 R3CO -
26
NH3 36 NH2-
RH 62 R -

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