Initial stages of the formation of lead oxide phases

Lyamkin, S. A.

doi:10.1134/s0036029509030021

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Thermodynamic Data On Lead Oxides Hydrides and Aqueous Spe1

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“…The published phase diagram of Pb -O system [32][33][34] indicates the presence of the following oxides at 25ºC and 1 bar: PbO, Pb3O4 [35][36][37][38][39][40], Pb12O17 [31,[41][42][43][44], Pb12O19 [41,[43][44][45] and PbO2. The oxide Pb2O3 exists only at high pressures [43,46].…”

Section: Thermodynamic Data On Lead Oxides Hydrides and Aqueous Spementioning

confidence: 99%

The revised potential – pH diagram for Pb – H₂O system

Nikolaychuk

2018

Ovidius University Annals of Chemistry

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Thermodynamic properties of lead species in aqueous solution are collected. The chemical equilibria between various forms of Pb(II) are considered. The speciation diagrams for the equilibria 4[PbOH]+(aq) ⇄ [Pb4(OH)4]4+(aq) and 2[Pb3(OH)4]2+(aq) ⇄ [Pb6(OH)8]4+(aq), and the thermodynamic activity - pH diagram of Pb(II) species are plotted. Basic chemical and electrochemical equilibria for lead are calculated. The potential - pH diagram for Pb - H2O system is revised.

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