lassify each half-reaction as a reduction or an oxidation. you are currently in a labeling module. turn off browse mode or quick nav, tab to items, space or enter to pick up, tab to move, space or enter to drop. cr2o2−7(aq) 14h (aq) 6e−⟶2cr3 (aq) 7h2o(l) fe3 (aq) 3e−⟶fe(s) au(s) 2cn−(aq)⟶au(cn)−2(aq) e− hgo(s) h2o(l) 2e−⟶hg(l) 2oh−(aq) 2cl−(aq)⟶cl2(g) 2e− answer bank