What is the standard reduction potential of hg(aq) to e, v 2 hg(aq)2e -> hg2 (a) 0.90 +0.80 half reaction hg22+(aq) + 2e, 2 hg(1) (a) +1.70 v (c) +0.10 v (b) +0.85 v (d) -0.10 v 41. the lead-acid storage battery consists of the following two half-cells: pb02(s)+4 h(aq)+so4(aq) +2e - pbso4(s)+2 h o0) which of the following concentrations decrease as the pb(s) + so4 (aq) -» pbso4(s) +2 e battery is discharged? i. [h (a) i only (c) both i and ii ii. [pb2 (b) ii only (d) neither i nor ii