Question

In: Chemistry

a) Consider the following half-reactions: Half-reaction E° (V) F2(g) + 2e- 2F-(aq) 2.870V 2H+(aq) + 2e- H2(g) 0.000V Zn2+(aq) + 2e- Zn(s) -0.763V


13)) a) Consider the following half-reactions: Half-reaction E° (V) F2(g) + 2e- 2F-(aq) 2.870V 2H+(aq) + 2e- H2(g) 0.000V Zn2+(aq) + 2e- Zn(s) -0.763V

(1) The weakest oxidizing agent is: enter formula

(2) The strongest reducing agent is:

(3) The strongest oxidizing agent is:

(4) The weakest reducing agent is:

(5) Will F-(aq) reduce Zn2+(aq) to Zn(s)?

(6) Which species can be reduced by H2(g)? If none, leave box blank.

b))

Consider the following half-reactions: Half-reaction E° (V) Ag+(aq) + e- Ag(s) 0.799V Co2+(aq) + 2e- Co(s) -0.280V Fe2+(aq) + 2e- Fe(s) -0.440V

(1) The weakest oxidizing agent is: enter formula

(2) The strongest reducing agent is:

(3) The strongest oxidizing agent is:

(4) The weakest reducing agent is:

(5) Will Ag(s) reduce Fe2+(aq) to Fe(s)?

(6) Which species can be oxidized by Co2+(aq)? If none, leave box blank.

c))

Consider the following half-reactions: Half-reaction E° (V) I2(s) + 2e- 2I-(aq) 0.535V Co2+(aq) + 2e- Co(s) -0.280V Cr3+(aq) + 3e- Cr(s) -0.740V

(1) The strongest oxidizing agent is: enter formula

(2) The weakest oxidizing agent is:

(3) The weakest reducing agent is:

(4) The strongest reducing agent is:

(5) Will Cr3+(aq) oxidize I-(aq) to I2(s)?

(6) Which species can be oxidized by Co2+(aq)? If none, leave box blank.

Solutions

Expert Solution

13) a) E0 of F2/F- = 2.87V

            E0 of H+/H2 = 0.00V

             E0 of Zn+2/Zn = - 0.763V

The order is E0 of Zn+2/Zn = - 0.763V

                    E0 of H+/H2 = 0.00V

                    E0 of F2/F- = 2.87V

More SRP electrode acts as strongest oxidising agent and lease SrP electode acts as strongest reducing agent.

1) weakest oxidising agent = Zn

2) Strongest redcuing agent = Zn

3) strongest oxidising agent = F2

4) weakest reducing agent = F2

5) No, F- acts as strongest oxidising agent ;So it oxidises the other substances.[ it has more SRP than Zn]

6) F- ion reduced by H2

          H2 +2 F- ---------------- 2 H+ + F2

b)  E0 0f   Ag+/Ag = 0.799V

       E0 0f Co+2/Co = - 0.280V

       E0 of Fe+2/Fe = - 0.44V

The order is E0 of Fe+2/Fe = - 0.44V

                     E0 0f Co+2/Co = - 0.280V

                     E0 0f   Ag+/Ag = 0.799V

1) weakest oxidising agent = Fe

   2) strongest reducing agent = Fe

3) strongest oxidising agent = Ag

4) weakest reducing agent = Ag

5) N0

6) Fe is oxidised by CO+2

Fe + Co+2 --------------- Fe+2 + Co

queen_honey_blossom answered 2 years ago
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