1. If a redox reaction occured with the 2 redox couples provided below, which species would be the oxidising agent? 3H+(

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1. If a redox reaction occured with the 2 redox couples provided
below, which species would be the oxidising agent?
3H+(aq) + HSO4–(aq) + 2e– → 2H2O(l) + SO2(aq) E° = 0.17 V
Ni2+(aq) + 2e– → Ni(s) E° = -0.25 V
a. Ni2+(aq) b. Ni(s) c. HSO4–(aq) d. H2O(l) e. SO2(aq)
2. In the reaction below, which species is the reducing agent?
H2S(g) + Br2(aq) → S(s) + 2Br–(aq) + 2H+(aq)
a. Br–(aq) b. H2O(l) c. S(s) d. Br2(aq) e. H2S(g)
3. In the reaction below, which species is reduced? Hg2+(aq) +
2I–(aq) → I2(s) + Hg(l)
a. Hg2+(aq) b. H2O(l) c. Hg(l) d. I–(aq) e. I2(s)