Useful pKa values: Compound pK a (H 2 O) pK a (DMSO) H 2 SO 4 -9 HCl -6 1.8 H 3 O + -1.76 Acetic acid 4.76 12.6 Phenol 10.02 18 H 2 O 15.7 32 CH 3 OH 16 29 Anilinium (Ph-NH 3 + ) 4.87 Pyridinium (C 6 H 5 NH + ) 5.23 3.4 Methyl Ammonium 10.6 11 Ammonia 41 Diisopropylamine 36 ∼44 2,4-Pentanedione 9 13.3 Methyl Acetoacetate 11 14 Dimethyl Malonate 13 16 Acetone 20 26.5 Ethane 50 Ethylene 44 ∼55 Acetylene 24 Source: http://www.chem.wisc.edu/areas/reich/pkatable/index.htm You should know the H 2 O pK a values within 1 pKa unit. The DMSO values are provided for comparison, but you don't need to know these exactly.
![Research articleReview: Bilirubin pKa studies; new models and … · 2017. 8. 28. · depends on the pH of the solution and the pKa values of UCB [1], the true pKa values of UCB are](https://img.pdfslide.net/doc/110x75/60bea8d478956f6219532354/research-articlereview-bilirubin-pka-studies-new-models-and-2017-8-28-depends.jpg)
