The revised potential – pH diagram for Pb – H ₂ O system

Abstract

Abstract 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) ⇄ [Pb 4 (OH) 4 ] 4 +(aq) and 2[Pb 3 (OH) 4 ] 2 +(aq) ⇄ [Pb 6 (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 - H 2 O system is revised.