PKA VALUES OF ACIDS
Ka and pKa Values of Acids , Phenols , Alcohols, Amines

Functional Group : Alcohols  

IUPAC Name Common Name Molecular Formula Ka pKa Melting Point (0C) Boiling Point (0C) Density

at

20 0C  gm/mL

1-alkanol Methanol Methyl alcohol 15.5 -98 65 0.791
1-alkanol Ethanol Ethyl alcohol 15.5 -114 78 0.789
1-alkanol 1-propanol Propyl alcohol 16.1 -124 97 0.804
1-alkanol 1-butanol Butyl alcohol 16.1 -89 118 0.810
2-alkanol 2-propanol Isopropyl alcohol, isopropanol 17.2 -88 82 0.785
2-alkanol 2-butanol sec-butyl alcohol 17.6 -88 99 0.806
2-alkanol 2-pentanol sec-amyl alcohol 17.8 -73 119 0.809
3-alkanol 3-pentanol Diethyl carbinol 18.2 -70 123 0.820
Functional Group :    Phenols 
Phenols Phenol Hydroxybenzene 9.98 41 181 1.132*
Phenols-alkanol 1,2-Benzenediol Catechol, pyrocatechol 9.45 102 245 1.344*
Phenols 1,3-Benzenediol Resorcinol 9.2 110 277 1.278
Phenols 1,4-Benzenediol Hydroquinone, 1,4-Dihydroxybenzene 10.9 171 285
Phenols 1,3,5-Benzenetriol Phloroglucinol, 1,3,5-trihydroxybenzene 8.45 216 s 1.460*
Phenols 2-Methylphenol o-cresol, 2-methylhydroxybenzene 10.29 31 191 1.135*
Phenols 3-Methylphenol m-cresol, 3-methylhydroxybenzene 10.09 12 202 1.03*
Phenols 4-Methylphenol p-cresol, 4-methylhydroxybenzene 10.26 35 202 1.154*
Phenols 2-Methoxyphenol Guaiacol 9.98 28 204 1.1287*
Phenols 3-Methoxyphenol Resorcinol, monomethyl ether 9.65 -18 244 1.145*
Phenols 4-Methoxyphenol 10.21 55 253
Phenols 4-Methyl-1,2-benzenediol 4-Methylcatechol 9.55 68 251 1.129*
Phenols 2-Ethylphenol 2-Ethylhydroxybenzene 10.2 -3 205 1.015*
Phenols 3-Ethylphenol 3- Ethylhydroxybenzene 9.9 -4 218 1.008*
Phenols 4-Ethylphenol 4-Ethylhydroxybenzene 10.00 45 218 1.05*
Phenols 2-Propylphenol o-propylphenol 10.47 7 223 1.015
Phenols 4-Propylphenol p-propylphenol 10.34 22 232 1.009*
Functional Group :  Carboxylic Acids
IUPAC Name Common Name Molecular Formula Ka pKa Melting Point (0C) Boiling Point (0C) Density

at

20 0C  gm/mL

Carboxylic acid Formic acid Methanoic acid 3.74 8 101 1.220
Carboxylic acid Acetic acid Ethanoic acid 4.76 17 118 1.0446*
Carboxylic acid Butanoic acid Butyric acid 4.82 -5 164 0.9528*
Carboxylic acid Pentanoic acid Valeric acid 4.86 -34 186 0.9339*
Carboxylic acid Propanoic acid Propionic acid 4.87 -21 142 0.9882*
Carboxylic acid Hexanoic acid Caproic acid 4.87 -4 202 0.9212*
Carboxylic acid Heptanoic acid Enanthic acid 4.89 -7 222 0.9124*
Carboxylic acid Octanoic acid Caprylic acid 4.89 17 240 0.907*
Carboxylic acid Nonanoic acid Pelargonic acid 4.96 12 256 0.905
Branched Carboxylic acid 2-Methylpropanoic acid Isobutyric acid 4.84 -46 155 0.943*
Branched Carboxylic acid 2,2-Dimethylpropanoic acid Trimethylacetic acid 4.78 35 164 0.9052*
Branched Carboxylic acid 2-Methylbutanoic acid 4.80 -70 176 0.934
Branched Carboxylic acid 3-Methylbutanoic acid Isovaleric acid 4.77 -30 176` 0.925
Branched Carboxylic acid 4-Methylpentanoic acid 4-Methylvaleric acid, Isocaproic acid 4.84 -33 200 0.923
Branched Carboxylic acid 2-Propylpentanoic acid Valproic acid 4.60 223 0.904*
Hydroxy acid Hydroxyethanoic acid Glycolic acid 3.88 80 d
Phenyl carboxylic acid Phenylethanoic acid α-Tolylic acid, Benzeneacetic 4.31 77 266 1.081*
Phenylcarboxylic acid 2-Phenylbutyric acid a-Ethyl-a-toluic acid 4.66
Benzoic acid Benzoic acid Benzenecarboxylic acid 4.20 122 249 1.2663*
Benzoic acid 2-Methyl-benzoic acid o-Toluic acid 3.91 107 258 1.0624*
Benzoic acid 3-Methyl-benzoic acid m-Toluic acid 4.25 111 1.0544*
Benzoic acid 4-Methyl-benzoic acid p-Toluic acid 4.37 182 275
Benzoic acid 2-Phenylbenzoic acid 3.46 112 344
Cinnamic acid trans-m-Methylcinnamic acid 4.44 115
Cinnamic acid trans-o-Methylcinnamic acid 4.50 175
Cinnamic acid trans-p-Methylcinnamic acid 4.56 199
Hydroxy acid 2-Hydroxy-benzoic acid Salicylic acid 2.97 159 1.443
Hydroxy acid 3-Hydroxy-benzoic acid 4.80 202
Hydroxy acid 4-hydroxy-benzoic acid 4.58 215
Dioic acid Ethanedioic acid Oxalic acid 1.25 d 190 s 157 1.93*
Dioic acid Propanedioic acid 1.59*Malonic acid 2.85 136 d 140 1.6193*
Dioic acid cis-Butenedioic acid Maleic 1.92 139 d 1.59*
Dioic acid trans-Butenedioic acid Fumaric 3.02 s 300 1.635
Dioic acid 2-Methylpropanedioic acid Methylmalonic acid 3.07 129 1.455
Dioic acid Butanedioic acid Succinic acid 4.21 185 d 235 1.572*
Dioic acid Pentanedioic acid Glutaric acid 3.22 98 273 1.4293*
Dioic acid 3-Methylpentanedioic acid 3-Methylglutaric acid 4.24 83
Dioic acid Hexanedioic acid Adipic acid 4.34 152 338
Dioic acid Heptanedioic acid Pimelic acid 4.71 104 357 d?
Dioic acid 1,2-Benzenedicarboxylic acid o-Phthalic 4.42 d 210
Dioic acid Octanedioic acid Suberic acid 4.52 142 230 d?
Dioic acid Nonanedioic acid Azelaic acid 4.53 110 336 d?
Dioic acid Decanedioic acid Sebacic acid 4.59 131 374 d? 1.2705
Dioic acid Undecanedioic acid 1,9-Nonanedicarboxylic acid 4.65 109
Dioic acid Dodecanedioic acid Decane-1,10-dicarboxylic acid 4.65 128 417 d?
Dioic acid Tridecanedioic acid Brassylic acid 4.65 113
Chlorocarboxylic acid Chloroacetic acid CH2ClCO2H 2.87 62 189 1.40435*
Chlorocarboxylic acid Dichloroacetic acid CHCl2CO2H 1.35 12 193 1.564
Chlorocarboxylic acid Trichloroacetic acid CCl3CO2H 0.66 59 198 1.612*
Chlorocarboxylic acid 2-Chloropropanoic acid C2H4ClCO2H 2.83 185 1.26
Chlorocarboxylic acid 3-Chloropropanoic acid C2H4ClCO2H 3.98 204 d
Chlorocarboxylic acid 2-Chlorobutanoic acid C3H6ClCO2H 2.86 1.18
Chlorocarboxylic acid 3-Chlorobutanoic acid C3H6ClCO2H 4.05 16 1.19
Chlorocarboxylic acid 4-Chlorobutanoic acid C3H6ClCO2H 4.52 16 1.22
Chlorocarboxylic acid 2-Chlorobenzoic acid C6H4ClCO2H 2.90 140 274 1.5445*
Chlorocarboxylic acid 3-Chlorobenzoic acid C6H4ClCO2H 3.84 154 283 1.4965*
Chlorocarboxylic acid 4-Chlorobenzoic acid C6H4ClCO2H 4.00 240
Bromocarboxylic acid Bromoacetic acid CH2BrCO2H 2.90 50 208 1.9335
Bromocarboxylic acid 3-Bromopropanoic acid C2H4BrCO2H 4.00 63 1.48
Bromocarboxylic acid 2-Bromobenzoic acid C6H4BrCO2H 2.85 149 295 1.929
Bromocarboxylic acid 3-Bromobenzoic acid C6H4BrCO2H 3.81 157 285 1.845
Bromocarboxylic acid 4-Bromobenzoic acid C6H4BrCO2H 3.96 254 1.894
Fluorocarboxylic acid Fluoroacetic acid CH2FCO2H 2.59 35 168 1.3682*
Fluorocarboxylic acid Trifluoroacetic acid CF3CO2H 0.52 -15 72 1.5351
Fluorocarboxylic acid 2-Fluorobenzoic acid C6H4FCO2H 3.27 124 1.46
Fluorocarboxylic acid 3-Fluorobenzoic acid C6H4FCO2H 3.86 124 0.47
Fluorocarboxylic acid 4-Fluorobenzoic acid C6H4FCO2H 4.15 184 1.48
Fluorocarboxylic acid Pentafluorobenzoic acid C6F5CO2H 1.75 103 220