Using the standard electrode potentials given in Table 3.1,

Question:

Using the standard electrode potentials given in Table 3.1, predict if the reaction between the following is feasible:

(i) Fe3+(aq) and I(aq)

(ii) Ag+ (aq) and Cu(s)

(iii) Fe3+ (aq) and Br− (aq)

(iv) Ag(s) and Fe3+ (aq)

(v) Br(aq) and Fe2+ (aq).

Solution:

Sincefor the overall reaction is positive, the reaction between Fe3+(aq) and I(aq) is feasible.

Since  for the overall reaction is positive, the reaction between Ag+ (aq) and Cu(s) is feasible.

Since for the overall reaction is negative, the reaction between Fe3+(aq) and Br(aq) is not feasible.

Since E for the overall reaction is negative, the reaction between Ag (s) and Fe3+(aq) is not feasible.

Since for the overall reaction is positive, the reaction between Br2(aq) and Fe2+(aq) is feasible.

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