Table 1.

Diffusion coefficients, pKa values, and bulk pH measurements for the FEM model

Acid	DHX, 10−5 cm2·s−1	pKa	pH
Acetic	1.271	4.76	6.82
Butanoic	0.918	4.83	6.77
Valeric	0.817	4.83	7.10
Hexanoic	0.784	4.85	6.40