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17 Nov 2019
One of the widely used primary batteries is alkaline cell, which can be purchased from e.g. Walmart under brand names of Du raced, Energizer and Rayovac(a Wisconsin company located in Madison). The active materials used in the battery are MnO_2 (manganese dioxide) and Zn (zinc), KOH (Potassium hydroxide) solution is used as electrolyte and the two active materials are separated by a paper-like separator. The reaction can written as 2MnO_2 + Zn + 2 H_2O = 2MnOOH + Zn(OH)_2 Please: Draw a picture (similar to the one with Lemon battery) showing the charge transfer (types of charge carrier and direction of charge flow) when it is in close circuit. Which is cathode and which is anode Which material is oxidized, which one is reduced, which one is electrolyte? What happen if the separator fails and two materials become physically contacted, why? Please write the two half reactions.
One of the widely used primary batteries is alkaline cell, which can be purchased from e.g. Walmart under brand names of Du raced, Energizer and Rayovac(a Wisconsin company located in Madison). The active materials used in the battery are MnO_2 (manganese dioxide) and Zn (zinc), KOH (Potassium hydroxide) solution is used as electrolyte and the two active materials are separated by a paper-like separator. The reaction can written as 2MnO_2 + Zn + 2 H_2O = 2MnOOH + Zn(OH)_2 Please: Draw a picture (similar to the one with Lemon battery) showing the charge transfer (types of charge carrier and direction of charge flow) when it is in close circuit. Which is cathode and which is anode Which material is oxidized, which one is reduced, which one is electrolyte? What happen if the separator fails and two materials become physically contacted, why? Please write the two half reactions.
Hubert KochLv2
21 Oct 2019