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)
Open in App
Verified by Toppr
(i) When emf is positive, the reaction is feasible. Ecello=EFeo−EI20=0.77−0.54=0.23V Reaction is feasible.
(ii) Ecello=EAgo−ECuo=0.80−0.34=0.46V Reaction is feasible.
(iii) Ecello=EFeo−EBr20=0.77−1.09=−0.32V Reaction is not feasible.
(iv) Ecello=EFeo−EAg0=0.77−0.80=−0.03V Reaction is not feasible.
(v) Ecello=EBr2o−EFe0=1.09−0.77=0.32V Reaction is feasible.