The following reactions are used in batteries:I 2H₂(g)+ O₂(g) → 2H₂O(l) E(cell)=1.23 V II Pb(s) +PbO₂(s) +2H₂SO₄(aq) →2PbSO₄(s)+ 2H₂O(l) E(cell)=2.04 V III 2Na(l)+ FeCl₂(s) →2NaCl(s) +Fe(s) E(cell)=2.35 V Reaction I is used in fuel cells, II in the automobile lead-acid battery, and III in an experimental high-temperature battery for powering electric vehicles. The aim is to obtain as much work as possible from a cell, while keeping its weight to a minimum.(a) In each cell, find the moles of electrons transferred and ΔG.(b) Calculate the ratio, in kJ/g, of wₘₐₓ to mass of reactants foreach of the cells. Which has the highest ratio, which the lowest,and why?
The following reactions are used in batteries:I 2H₂(g)+ O₂(g) → 2H₂O(l) E(cell)=1.23 V II Pb(s) +PbO₂(s) +2H₂SO₄(aq) →2PbSO₄(s)+ 2H₂O(l) E(cell)=2.04 V III 2Na(l)+ FeCl₂(s) →2NaCl(s) +Fe(s) E(cell)=2.35 V Reaction I is used in fuel cells, II in the automobile lead-acid battery, and III in an experimental high-temperature battery for powering electric vehicles. The aim is to obtain as much work as possible from a cell, while keeping its weight to a minimum.(a) In each cell, find the moles of electrons transferred and ΔG.(b) Calculate the ratio, in kJ/g, of wₘₐₓ to mass of reactants foreach of the cells. Which has the highest ratio, which the lowest,and why?
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The following reactions are used in batteries:I 2H₂(g)+ O₂(g) → 2H₂O(l) E(cell)=1.23 V II Pb(s) +PbO₂(s) +2H₂SO₄(aq) →2PbSO₄(s)+ 2H₂O(l) E(cell)=2.04 V III 2Na(l)+ FeCl₂(s) →2NaCl(s) +Fe(s) E(cell)=2.35 V Reaction I is used in fuel cells, II in the automobile lead-acid battery, and III in an experimental high-temperature battery for powering electric vehicles. The aim is to obtain as much work as possible from a cell, while keeping its weight to a minimum.(a) In each cell, find the moles of electrons transferred and ΔG.(b) Calculate the ratio, in kJ/g, of wₘₐₓ to mass of reactants foreach of the cells. Which has the highest ratio, which the lowest,and why?
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