Table 2. ΔG values for the dissociation of substituted benzoic acids in aqueous ethanol solutions.

Temperature = 25.0 ± 0.2 °C

Wt. % Ethanol	ΔG in cal/mole
	Substituent
	H	m-Allyl	p-Allyl	m-Propenyl	p-Propenyl
0	5740	5820	5900	5790	6120
12.2	6080	6180	6240	6140	6540
25.2	6670	6830	6870	6750	6990
44.1	7570	7720	7730	7660	7790
64.8	8470	8620	8620	8540	8730