The revised potential – pH diagram for Pb – H₂O system

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.