Pyridine (benzene with one ring position a N) is a weak organic base (Kb = 1.7x10-9. What is the pH of a 0.10 M aqueous solution? O a. 5.58 O b.9.62 O c.9.11 O d. 4.38 What's the standard cell potential, E in V, of a galvanic cell comprised of the Fe 2+ Fe and Ag +Ag couples if their standard half-cell reduction potentials are -0.44 and +0.799 V, respectively O a. +0.36 O b.+ 1.24 O C. - 1.24 O d.-0.36 Copper (Cu 2+ Cu; standard reduction potential 0.337 V) could provide cathodic protection for gold (Au Au; standard reduction potential 1.68 V) True O False