Determine which of the following pans of reactants will result in a spontaneous

Question

Determine which of the following pans of reactants will result in a spontaneous reaction at 25 degree C Pb2+(aq) + 2e^- rightarrow Pb(s) E degree = -0.13 V Cu^+(aq) + e^- rightarrow Cu(s) E degree = 0.52 V Ag^+ (aq) + e^- rightarrow Ag(s) E degree = 0.80 V Br_2(1) + 2e^- rightarrow 2 Br^-(s) E degree = 1.09 V Li^+ (aq) + e^- rightarrow Li(s) E degree = -3.04 V Al^3+ (aq) + 3e^- rightarrow Al(s) = E degree = -1.66 V Fe^3+ (aq) + 3e^- rightarrow Fe(s) E degree = -0.036 V Ni^2+ (aq) + 2e^- rightarrow Ni(s) E degree = -0.23 V Fe^3+ (aq) + Ni(s) Pb^2+ (aq) + Cu(s) Ag^+ (aq) + Br^- (aq) Li^+ (aq) + Al(s)

Explanation / Answer

1)
Eo of Fe3+ is more than Eo of Ni2+
so Fe3+ should get reduced
which is what is happening so it is correct

2)
Eo of Cu+ is more than Eo of Pb2+
so Cu+ should get reduced
this is not correct

3)
Eo of Br2 is more than Eo of Ag+
so Br2 should get reduced
this is not correct

4)
Eo of Al is more than Eo of Li+
so Al3+ should get reduced
this is not correct

AnsweR: option 1
Fe3+(aq) + Ni (s) is spontaneous

Related Questions

Navigate

• Browse (All)
• Browse D
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.