![]() Protons, H + (aq), are consumed at the cathode.In the reaction above, the anode is the Cu(s) since it increases in oxidation state from 0. In other words, this is where the metal loses electrons. Anode: The anode is where the oxidation reaction takes place. PbO 2(s) + 4H + (aq) + 2e - + SO 4 2- (aq) → PbSO 4(s) + 2H 2O (l) When an electrode is oxidized in a solution, it is called an anode and when an electrode is reduced in solution. PbSO 4(s) sticks to the lead frame of the cathode. Lead in lead dioxide is reduced at the cathode by protons from the sulfuric acid:.Electrode: lead frame covered with lead dioxide, PbO 2(s).Electrons migrate from anode (-) to cathode (+) along wires connecting the electrodes.PbSO 4(s) sticks to the lead frame of the anode. Pb 2+ reacts with SO 4 2- in sulfuric acid to produce PbSO 4(s) as a precipitate:.Electrode: spongy lead, Pb (s) in a lead frame (porous lead plate).converts chemical energy stored in the lead, lead dioxide and sulfuric acid into electrical energyīelow is a diagram of a lead-acid cell during discharge:.is a spontaneous redox reaction (E (redox) is positive).No ads = no money for us = no free stuff for you! A Lead-Acid Galvanic Cell Producing Electricity (discharging) Galvanic cells which can be recharged are known as secondary cells.Recharging a lead-acid cell is therfore a non-spontaneous electrolytic process.Recharging a lead-acid galvanic cell (or a battery) converts electrical energy from the recharger back into chemical energy stored in the galvanic cell (or battery).(iii) A lead-acid battery can therefore be recharged in a similar way. (ii) positive terminal of a battery charger to the positive terminal of the galvanic cell. (i) negative terminal of a battery charger to the negative terminal of the galvanic cell A lead-acid galvanic cell can be recharged by connecting the :.Lead-acid cells are rechargeable because the reaction products do not leave the electrodes.The battery in a petrol or diesel car is a 12 volt lead-acid battery. 6 lead-acid galvanic cells in series produce 12 volts. ![]() When a single lead-acid galvanic cell is discharging, it produces about 2 volts.Discharging a lead-acid battery is a spontaneous redox reaction.When a lead-acid cell is producing electricity (discharging) it is converting chemical energy into electrical energy.A lead-acid battery is made up of a number of lead-acid galvanic (voltaic) cells connected up in series.You need to become an AUS-e-TUTE Member! Lead-Acid Batteries Chemistry Tutorial Key Concepts Want chemistry games, drills, tests and more? Lead-Acid Batteries Chemistry Tutorial More Free Tutorials Become a Member Members Log‐in Contact Us
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