Standard Reduction Potentials

The following may be useful.

   1) Calculate E° for the following reaction.

2HNO₃(aq) + 6HBr(aq) 3Br₂(l) + 2NO(g) + 4H₂O(l)

(a) -0.106 V

(b) 2.026 V

(c) -2.206 V

(d) 0.106 V

(e) -1.278 V

   2) Calculate E° for the following reaction.

Sn(s) + 6F^-(aq) + 4Fe³⁺(aq) 4Fe²⁺(aq) + [SnF₆]^2-(aq)

(a) 0.521 V

(b) -0.521 V

(c) 1.021 V

(d) -1.021 V

(e) 3.334 V

   3) Calculate E° for the following reaction.

2Tl⁺(aq) + 2I^-(aq) I₂(s) + 2Tl(s)

(a) -0.875 V

(b) -1.215 V

(c) 0.195 V

(d) -0.195 V

(e) 0.875 V

 

   4) Calculate E° for the following reaction.

2S(s) + 4H⁺(aq) + Zr(s) Zr⁴⁺(aq) + 2H₂S(aq)

(a) 1.81 V

(b) 1.67 V

(c) -1.39 V

(d) 1.39 V

(e) -1.67 V

   5) Calculate E° for the following reaction.

2Al³⁺(aq) + 3V(s) 3V²⁺(aq) + 2Al(s)

(a) -0.48 V

(b) 0.22 V

(c) -2.84 V

(d) 2.84 V

(e) 0.48 V

 

   6) Calculate E° for the following reaction.

3Se(s) + 6H⁺(aq) + 2Au(s) 3H₂Se(aq) + 2Au³⁺(aq)

(a) 1.90 V

(b) -1.10 V

(c) 1.10 V

(d) -1.90 V

(e) -4.20 V

   7) Calculate E° for the following reaction.

6CO₂(g) + 6H⁺(aq) + 2Al(s) 3(COOH)₂(aq) + 2Al³⁺(aq)

(a) -1.17 V

(b) 2.15 V

(c) -2.15 V

(d) 1.17 V

(e) 1.85 V

    8) Calculate E° for the following reaction.

Te(s) + 2H₂O(l) + 2Sn⁴⁺(aq) TeO₂(s) + 4H⁺(aq) + 2Sn²⁺(aq)

(a) 0.229 V

(b) 0.379 V

(c) -0.379 V

(d) 0.679 V

(e) -0.229 V

 

   9) Calculate E° for the following reaction.

Na₂SO₄(aq) + Pb(s) PbSO₄(s) + 2Na(s)

(a) 5.072 V

(b) 2.358 V

(c) -2.358 V

(d) 3.07 V

(e) -5.072 V

  10) Calculate E° for the following reaction.

NiO₂(s) + 2Fe²⁺(aq) + 4H⁺(aq) Ni²⁺(aq) + 2Fe³⁺(aq) + H₂O(l)

(a) -0.929 V

(b) 2.471 V

(c) 0.929 V

(d) 0.158 V

(e) -2.471 V