Problem: Two primary batteries are based on the cell reactions as follows: 2 MnO2 + Zn +...
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Problem: Two primary batteries are based on the cell reactionsas follows:
2 MnO2 + Zn + 2NH4Cl ->Mn2O3 +Zn(NH3)2Cl2 + H2O
and
2Li + 2SO2 ->Li2S2O4
that have free energies of -229 Kj/mol of Zn and -294 Kj/mol ofLi, respectively. Typical batteries have a capacity of 2 Ah (amperehours). Estimate the battery voltages and the weights of the twometals needed to deliver this capacity. Do your calculations revealany advantages for Li battery? (Atomic weights of Zn and Li are 65and 7, respectively.)
Problem: Two primary batteries are based on the cell reactionsas follows:
2 MnO2 + Zn + 2NH4Cl ->Mn2O3 +Zn(NH3)2Cl2 + H2O
and
2Li + 2SO2 ->Li2S2O4
that have free energies of -229 Kj/mol of Zn and -294 Kj/mol ofLi, respectively. Typical batteries have a capacity of 2 Ah (amperehours). Estimate the battery voltages and the weights of the twometals needed to deliver this capacity. Do your calculations revealany advantages for Li battery? (Atomic weights of Zn and Li are 65and 7, respectively.)
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