Consider the nernstian half-reaction: A 3+ + 2e «± A+ £°A3+/A+ = -0.500 V vs. NHE The i-E curve for a solution at 25°C containing 2.00 mM A3+ and 1.00 mM A+ in excess electrolyte shows //>c = 4.00 fJiA and //>a = -2.40 fiA. (a) What is El/2 (V vs. NHE)? (b) Sketch the expected i-E curve for this system, (c) Sketch the "log plot" (see Figure 1.4.2b) for the system.