. Author manuscript; available in PMC: 2013 Sep 1.

Published in final edited form as: J Chem Thermodyn. 2012 Mar 5;52:11–15. doi: 10.1016/j.jct.2012.02.019

TABLE 6.

Emf of Cell B and pH values with δE_j correction at (298.15 and 310.15) K for TRICINE buffer

m₁	m₂	m₃	I	E_x/V		δE_j^b/mV		Without^c δE_j corr	With^d δE_j corr	Extended^e D-H eqn.	Without^c δE_j corr	With^d δE_j corr	Extended^e D-H eqn.

				298.15 K	310.15 K	298.15 K	310.15 K	298.15 K			310.15 K
0.09	0.03	0.00	0.03	0.69003	0.68740	0.3	0.4	7.538	7.543	7.544	7.329	7.334	7.335
0.08	0.02	0.14	0.16	0.68180	0.67861	2.1	2.3	7.399	7.434	7.435	7.188	7.223	7.224
0.09	0.03	0.13	0.16	0.68926	0.68591	2.1	2.2	7.526	7.561	7.562	7.305	7.340	7.341
0.06	0.02	0.14	0.16	0.68902	0.68599	2.1	2.2	7.522	7.556	7.557	7.307	7.342	7.342

Emf of Cell C^a				E_s/V		^fE_j/mV

0.008695 m KH₂PO₄ + 0.03043 m Na₂HPO₄				0.68275	0.69147	2.6	2.9

Published data [4, 6, 8] for physiological phosphate buffer solutions; units of m, mol·kg⁻¹

The residual liquid junction potential, δE_j = E_j(s) − E_j(x), which can be calculated from equation (1) and the values of tables 4 – 6. The pH of the primary standard phosphate buffer is 7.415 and 7.395 at T = (298.15 and 310.15) K, respectively.

Values obtained from equation (3) and E_x and E_s data from this table

Obtained from equation (2) using values of E_x, E_s, and δE_j from this table, and k = 0.059156 V and 0.061538 V at 298.15 K and 310.15 K, respectively

Obtained from extended Debye-Hückel (DH) equation of the Bates-Guggenheim convention, data listed in tables 4–5

E_j is the liquid junction potential in mV.