caa a22 4500 445327596 CHVBK 20180317142726.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s10953-011-9705-3 doi (NATIONALLICENCE)springer-10.1007/s10953-011-9705-3 Néher-Neumann Erzsébet Department of Chemistry, Inorganic Chemistry, Royal Institute of Technology (KTH), 100 44, Stockholm, Sweden aut The Liquid Junction Potential in Potentiometric Titrations. XII. The Calculation of Potentials for Emf Cells with Liquid Junctions, of the Type, AY AY + A2MoO4+HY, Involving the Formation of Iso-Polymolybdates in the Range −log 10[H+]≤7, at [A+]= C mol⋅L−1, Constant, and 25 °C [Elektronische Daten] [Erzsébet Néher-Neumann] Equations are derived, in a general form, and valid in the range 0.5≤C≤3mol⋅L−1, for the calculation of the total potential anomalies (ΔE H) for emf cells where the formation of iso-polymolybdates takes place, according to the equilibria: $$p \mathrm{H}^{+} (h) + q \mathrm{MoO}_{4}^{2 -} (b)\rightleftharpoons [(\mathrm{H}^{+})_{p}(\mathrm{MoO}_{4}^{2-})_{q} ] ^{p - 2q} (cpx _{pq})$$ by measuring [H+]=h, in NaClO4 ionic medium (A+, Y−) at [Na+]=3mol⋅L−1. The total cell emf (E H), can be defined as: $$E_{\mathrm{H}} = E_{\mathrm{0H}} + g \log_{10} h + g\log_{10} f_{\mathrm{HTS}2} +E_{\mathrm{D}} + E_{\mathrm{D}f}$$ where: E 0H is an experimental constant, E D+E Df =E J, the classical liquid junction potential, and glog 10 f JTS2+E D+E Df =ΔE H. Here, $\mathrm{MoO}_{4}^{2 -}$ is the central "metal ion”, E D is the ideal diffusion potential (Hendersson equation), E Df is the contribution of the activity coefficients to E D. f HTS2 denotes the activity coefficient of the H+ ions in the terminal solution TS2. The investigations of this system made by Sasaki and Sillén are critically analyzed. Some emf cells are supposed for the determination of the interaction coefficients involved. All calculations are valid at 25 °C. The revised equilibrium constants are presented in Table14. Springer Science+Business Media, LLC, 2011 Iso-polymolybdates nationallicence Liquid junction potential nationallicence Ideal diffusion potential nationallicence Ionic activity factors nationallicence Specific interaction theory nationallicence Interaction coefficients nationallicence Total potential anomalies nationallicence Polyanions nationallicence Journal of Solution Chemistry Springer US; http://www.springer-ny.com 40/6(2011-06-01), 989-1040 0095-9782 40:6<989 2011 40 10953 https://doi.org/10.1007/s10953-011-9705-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10953-011-9705-3 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Néher-Neumann Erzsébet Department of Chemistry, Inorganic Chemistry, Royal Institute of Technology (KTH), 100 44, Stockholm, Sweden aut NATIONALLICENCE 773 0- Journal of Solution Chemistry Springer US; http://www.springer-ny.com 40/6(2011-06-01), 989-1040 0095-9782 40:6<989 2011 40 10953 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer