In the table of standard reduction potentials, locate the half-reactions for the
ID: 1065974 • Letter: I
Question
In the table of standard reduction potentials, locate the half-reactions for the reductions of the following metal ions to the metal: Sn^2+ (aq), Au^+ (aq), Zn^2+ (aq), Co^2+ (aq), Ag^+ (aq), and Cu^2+ (aq). Among the metal ions and metals that make up these half-reactions: Which metal ion is the weakest oxidizing agent? Which metal ion is the strongest oxidizing agent? Which metal is the strongest reducing agent? Which metal is the weakest reducing agent? Will Sn(s) reduce Cu^2+ (aq) to Cu(s)? Will Ag(s) reduce Co^2+ (aq) to Co(s)? Which metal ions on the list can be reduced by Sn(s)? What metals can be oxidized by Ag^+ (aq)? Using values from the table of standard reduction potentials, calculate the cell potentials of the following cells. Fe(s) | Fe^2+ (aq) || Hg^2+ (aq) | Hg(l) Pt(s)| Fe^2+ (aq), Fe^3+ (aq) || MnO^-_4 (aq), H^+ (aq), Mn^2+ (aq) | Pt(s) Pt(s) | Cl_2 (g) | Cl^-(aq) || Au^+(aq) | Au(s) Four metals, A, B, C, and D, exhibit the following properties. Only A and C react with 1.0 M hydrochloric acid to give H_2 (g). When C is added to solutions of the ions of the other metals, metallic B, D, and A are formed. Metal D reduces B^n+ to give metallic B and D^n+. Based on this information, arrange the four metals in order of increasing ability to act as reducing agents. For the following oxidation-reduction reactions, identify the half-reactions and label them as oxidation or reduction. Cu(s) + Ni^2+ (aq) rightarrow Ni(s) + Cu^2+ (aq) 2 Fe^3+ (aq) + 3 Ba(s) rightarrow 3 Ba^2+ (aq) + 2 Fe(s)Explanation / Answer
Eo(Sn2+/Sn) = -0.14 V
Eo (Au+/Au) = 1.83 V
Eo(Zn2+/Zn) = -0.76 V
Eo(Co2+/Co) = -0.28 V
Eo(Ag+/Ag)= 0.80
Eo(Cu2+/Cu)= 0.34 V
a)
weakest oxidising agent is the one with least Eo value
Answer: Zn2+
b)
strongest oxidising agent is the one with graetest Eo value
Answer: Au+
c)
strongest reducing agent is metal of weakest oxidising agent
Answer: Zn
d)
weakest reducing agent is metal of strongest oxidising agent
Answer: Au
e)
yes because Eo of Cu2+ is more than Sn
f)
No because Eo of Co2+ is less than Af
g)
Au+,Ag+,Cu2+
h)
all except Au
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