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Question 17

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) Br2 (aq) and Fe2+ (aq).

Answer

Since Eº for the overall reaction is positive, the reaction between Fe3+(aq) and I - (aq) is feasible.

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



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

Since Eº 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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