Heart pacemakers are often powered by lithium-silver chromate button batteries. The overall cell reaction is 2 Li(s)
Question:
2 Li(s) + Ag2CrO4(s) → Li2CrO4(s) + 2 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°C. How does this compare to the emf you calculated in part (b)?
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Related Book For 
Chemistry The Central Science
ISBN: 978-0321696724
12th edition
Authors: Theodore Brown, Eugene LeMay, Bruce Bursten, Catherine Murphy, Patrick Woodward
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