California Condors The continued recovery of endangered California condors is threatened by lead poisoning because hunters still use ammunition containing lead, and some of their kills are eaten by the condors. Consumed lead may dissolve in a reaction with a condor’s stomach acid: Pb(s) 1 2 H1(aq) S Pb21(aq) 1 H2(g) a. Use the appropriate standard reduction potentials in Appendix 6 to calculate E° rxn for this reaction. b. What is the value of Erxn in stomach acid with a pH of 0.80 if the value of [Pb21] is 2.00 3 1026 M ? c. What are the values of DG° and K for the reaction at 25°C?