For each reaction that is spontaneous under standard conditions (that is, K > 1), write a cell diagram, determine the standard cell potential, and calculate ΔG° for the reaction:

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(a) 2 NO3 (aq) + 8 H¹ (aq) + 6 Hg(1) → 3 Hg₂2 (aq) + 2 NO(g) + 4 H₂O(1) 2+ 2+ 3+ (b) 2 Hg2+ (aq) + 2 Br¯(aq) → Hg₂²+ (aq) + Br₂(1) (c) Cr₂O7 (aq) + 14 H* (aq) + 6 Pu³+ (aq) → 6 Pu¹(aq) +2 Cr³+(aq) + 7 H₂O(1)