Pb. Pb in PbSO4 : +2. Sum of all oxidation number =0. So, Pb is at +2 oxidation state. To neutral that -2 charge, +2 charge should be there and it is given by Pb 2+ ion. pb +2 s-2 + h +1 2 o-1 2 â pb +2 s +6 o-2 4 + h +1 2 o-2 b) Identify and write out all redox couples in reaction. The anodic oxidation of solid Pb in H 2 SO 4 to form PbSO 4 has been investigated by rotating disc, potentiostatic pulse and ac impedance measurements. The rates of PbSO4 formation on the Pbâ0.08 mass% CaâSn alloys, which are the choice materials for grids in the valve-regulated leadâacid battery (VRLA), were inhibited by the presence of Sn. +1 +3 0-1 +2 +1. Check to see if the oxidation numbers show oxidation or reduction. The system is compared with measurements on Pb(Hg) in H 2 SO 4 and with Pb(Hg), Hg, solid Pb in HClO 4 solution. Therefore oxidation number of Pb in PbSO 4 â¦ If you consider oxidation as the loss of electrons and gain of oxidation number, and reduction as the gain of electrons and decrease in oxidation number, the oxidation states are as follows: Pb : 0 (Elementary state) H in H2SO4 : +2. PbSO 4 salt does not have an overall charge. It can only be +2, or +4. what is the oxidation number of pb in pbso4. Also, the answer would not be +10 if what you had said was correct (about the sulfur ion). Identify which reactants are being oxidized (the oxidation number increases when it reacts) and which are being reduced (the oxidation number goes down). Therefore x+6-8=0. What is the oxidation number of phosphorous in the H3PO2 molecule? I went by the rule of the most electronegative atom getting their typical oxidation state (so O was assigned -2 (total -8)...then S was assigned -2...and finally Pb was given +10 to balance the molecule). Identify the products and the reactants, and then their oxidation numbers. Lead, being a metal, has very set oxidation numbers. Sulfide ion is at -2 oxidation state. H in H2 : 0. In order to make the compound neutral, Pb must be +2. Identify the substance oxidised, reduced, oxidising agent and reducing agent for each of the following reactions: Pb(s) + PbO 2 (s) + 2H 2 SO 4 (aq) â 2PbSO 4 (s) + 2H 2 O(l) The total should equal when you add all oxidation numbers: Pb + (-2) = 0 ----> Pb = +2. SO4 has charge of -2. Could you tell me how you went about getting the oxidation number for Pb in PbSO4? Expert Answer: Let the oxidation number of Pb=x. It is suggested that a precipitation mechanism to form PbSO 4 occurs under some conditions prior to the solid state â¦ How to calculate oxidation number of Pb in PbSO4?And Explain? Asked by | 25th Mar, 2009, 06:56: PM. But Sulfate ion has -2 charge. Oxidation number of Pb is +2 ... Pb PbO2 PbSO4 H2O H2SO4. Oxidation number of S=+6. 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