. 2020 Aug 29;319:114164. doi: 10.1016/j.molliq.2020.114164

Table 2.

Ionic strength and temperature dependence parameters according to Debye-Hückel (EDH, molar concentration scale) and SIT (molal concentration scale) models (p = 0.1 MPa).

EDH	log K_{θ i}^H0	C_i			A_Ti	C'_i
EDH	log K_{θ i}^H0	NaCl	(CH₃)₄NCl	(C₂H₅)₄NI	A_Ti	NaCl
i=1^a	9.937 ± 0.008^b	0.226 ± 0.005^b	0.271 ± 0.005^b	0.69 ± 0.02^b	−27.4 ± 0.9^b	2.0 ± 0.8^b
i = 2	3.274 ± 0.008	0.180 ± 0.006	0.287 ± 0.008	0.58 ± 0.03	−2.9 ± 0.9	3.1 ± 0.7

SIT	log K_{θ i}^H0	∆ε_i			∆H_{i 0}⁰	∆ε_i′
SIT	log K_{θ i}^H0	NaCl	(CH₃)₄NCl	(C₂H₅)₄NI	∆H_{i 0}⁰	NaCl
i = 1	9.947 ± 0.009	0.204 ± 0.006	0.173 ± 0.009	0.55 ± 0.02	−27.4 ± 0.9	1.7 ± 0.9
i = 2	3.284 ± 0.010	0.158 ± 0.006	0.179 ± 0.011	0.43 ± 0.03	−2.9 ± 1.0	2.7 ± 0.8

Protonation step, see Eq. (1a).

95% confidence interval (C.I.) = 2u_r (relative standard uncertainty on log₁₀K^H); standard uncertainties: u(T) = 0.1 K, u(p) = 1 kPa.