2. An alternate (mercury-free) battery chemistry used for pacemakers is the lithiumiodine cell. The overall reaction in this battery is: Li+1/2I2Lil a) Determine the anodic and cathodic half-reactions and explain how you determined them. b) Use the Gibbs formation energies from Fuller Appendix C to determine the theoretical cell voltage at standard state conditions. c) How much does the cell voltage change when the battery is used at body temperature conditions (98.6 F) ? Use the standard molar entropies from Huggins Table 2.1 to determine the temperature dependence on the battery's voltage. Table C.1 Standard Enthalov and Gibbs Energv of Formation from the Elements at 25C(298.15K). Table 2.1 Entropy data for some species at 25 and 225C [3]