Table 2.

Free Energy Change for Influx, Eq. (3).

potential permeant	ΔGper(infl) (kJ/mole)
	chemogenic	electrogenic	barogenic	sum
			Pi/Po = 1.00 || 1.05	Pi/Po = 1.00 || 1.05
H 2 O o	−0.003	0	0 || 0.13	−0.003 || 0.13
Na o +	−5.67	−8.78	0 || 0.13	−14.5 || −14.3
K o +	8.78	−8.78	0 || 0.13	0 || 0.13
H 3 O o +	1.79	−8.78	0 || 0.13	−6.99 || −6.86
Ca o 2+	−24.8	−17.6	0 || 0.13	−42.4 || −42.3
Cl o −	−5.02	8.76	0 || 0.13	3.74 || 3.87
HCO 3,o −	−2.83	8.76	0 || 0.13	5.93 || 6.06

Concentrations in Table 1. E_m,oi = −91 mV