?Heart pacemakers are often powered by lithium-silver chromate "button" batteries. The
Chapter 20, Problem 20.75(choose chapter or problem)
Heart pacemakers are often powered by lithium-silver chromate "button" batteries. The overall cell reaction is
\(2 \mathrm{Li}(s)+\operatorname{Ag}_{2} \mathrm{CrO}_{4}(s) \longrightarrow \mathrm{Li}_{2} \mathrm{CrO}_{4}(s)+2 \mathrm{Ag}(s)\)
(a) Lithium metal is the reactant at one of the electrodes of the battery. Is it the anode or the cathode?
(b) Choose the two half-reactions from Appendix E that most closely approximate the reactions that occur in the battery. What standard emf would be generated by a voltaic cell based on these half-reactions?
(c) The battery generates an emf of +3.5 V. How close is this value to the one calculated in part (b)?
(d) Calculate the emf that would be generated at body temperature, \(37^{\circ} \mathrm{C}\). How does this compare to the emf you calculated in part (b)?
Text Transcription:
2 Li(s) + Ag2CrO4(s) longrightarrow Li2CrO4(s) + 2 Ag(s)
37^circ C
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