Consider the following reactions. reaction
MnO4−(aq) + Cl−(aq) → MnO2(s) + ClO3−(aq) in basic solution
Balance each equation under the specified conditions
4. Balance the following redox reactions that occur in
basic solution using the half-reaction method.
a. PO33-(aq) + MnO4-(aq) → PO43-(aq) +
MnO2(s)
b. Mg(s) + OCl-(aq) → Mg(OH)2(s) + Cl-(aq)
c. H2CO(aq) + Ag(NH3)2+(aq) → HCO3-(aq) + Ag(s) +
NH3(aq)
Balance in neutral solution: MnO4- + S2O32- ---> SO42- + MnO2
I'm specifically having trouble with using H2O, H+, and OH- in
balancing the half reactions.
(a) Balance the following half-reactions by the ion-electron
half-reaction method:
(i) (acid solution) NO3 – (aq) → N2O (g)
(ii) (acid solution) FeO4 2– (aq) → Fe3+ (aq)
(iii) (base solution) Fe2O3 (s) → Fe(OH)2 (s)
(iv) (base solution) Cu2O (s) → Cu(OH)2 (s)
(b) Which of the above equations are oxidation
half-reactions?
(c) Give the formulas of the reactants that become oxidized in
the course of the reaction.
3. Balance the following redox reactions that occur in
acidic solution using the half-reaction method.
a. Cr(s) + NO3-(aq) → Cr3+(aq) + NO(g)
b. CH3OH(aq) + Ce4+(aq) → CO2(aq) +
Ce3+(aq)
c. SO32-(aq) + MnO4-(aq) → SO42-(aq) +
Mn2+(aq)