wastes, e.g., in the processing of lead–bismuth wastes from lead refineries, impure solutions of lead(II) nitrate are formed as by-product. These solutions are reported to be used in the gold cyanidation process.[12]ප්‍රතික්‍රියා[සංස්කරණය]Apart from lead(II) acetate, lead(II) nitrate is the only common soluble lead compound. Lead(II) nitrate readily dissolves in water to give a clear, colourless solution.[13] As an ionic substance, the dissolution of lead(II) nitrate involves dissociation into its constituent ions.Pb(NO3)2 (s) → Pb2+ (aq) + 2 NO-3 (aq)Lead(II) nitrate forms a slightly acidic solution, with a pH of 3.0 to 4.0 for a 20% aqueous solution.[14]When concentrated sodium hydroxide solution is added to lead(II) nitrate solution, basic nitrates are formed, even well past the equivalence point. Up through the half equivalence point, Pb(NO3)2·Pb(OH)2 predominates, then after this point Pb(NO3)2·5Pb(OH)2 is formed. No simple Pb(OH)2 is formed up to at least pH 12.[10][15]ස