Oxidation-Reduction Reactions (Section)
Using the activity series (Table), write balanced chemical equations for the following reactions. If no reaction occurs, write NR. (a) Iron metal is added to a solution of copper(II) nitrate, (b) zinc metal is added to a solution of magnesium sulfate, (c) hydrobromic acid is added to tin metal, (d) hydrogen gas is bubbled through an aqueous solution of nickel(II) chloride, (e) aluminum metal is added to a solution of cobalt(II) sulfate.
Table Activity Series of Metals in Aqueous Solution
Metal | Oxidation Reaction |
Lithium | Li(s) → Li+(aq)+ e- |
Potassium | K(s) → K+(aq)+ e- |
Barium | Ba(s) → Ba2+(aq)+ 2e- |
Calcium | Ca(s) → Ca2+(aq)+ 2e- |
Sodium | Na(s) → Na+(aq)+ e- |
Magnesium | Mg(s) → Mg2+(aq)+ 2e- |
Aluminum | Al(s) → Al3+(aq)+ 3e- |
Manganese | Mn(s) → Mn2+(aq)+ 2e- |
Zinc | Zn(s) → Zn2+(aq)+ 2e- |
Chromium | Cr(s) → Cr3+(aq)+ 3e- |
Iron | Fe(s) → Fe2+(aq)+ 2e- |
Cobalt | Co(s) → Co2+(aq)+ 2e- |
Nickel | Ni(s) → Ni2+(aq)+ 2e- |
Tin | Sn(s) → Sn2+(aq)+ 2e- |
Lead | Pb(s) → Pb2+(aq)+ 2e- |
Hydrogen | H2(g) → 2 H+(aq) + 2e- |
Copper | Cu(s) → Cu2+(aq)+ 2e- |
Silver | Ag(s) → Ag+(aq)+ e- |
Mercury | Hg(l) → Hg2+(aq)+ 2e- |
Platinum | Pt(s) → Pt2+(aq)+ 2e- |
Gold | Au(s) → Au3+(aq)+ 3e- |
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