The values of the dissociation parameters

Benzenepentacarboxylic acid

Mellitic acid

K₁/K₂

8.55

33.87

K₂/K₃

16.9

15.42

K₃/K₄

19.57

49.2

8.94

25.94

0.55

1.75

0.029

0.037

0.933

0.986

0.360

0.645

0.029

0.036