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Redox reactions commonly take place in acidic solutions. The could just as easily take place in basic solutions. This example problem shows how to balance a redox reaction in a basic solution.
Redox reactions are balanced in basic solutions using the same half-reaction method demonstrated in the example problem "Balance Redox Reaction Example". In summary:
This will balance the reaction in an acidic solution, where there is an excess of H+ ions. In basic solutions, there is an excess of OH- ions. The balanced reaction needs to be modified to remove the H+ ions and include OH-ions.
Problem:
Balance the following reaction in a basic solution:
Cu(s) + HNO3(aq) → Cu2+(aq) + NO(g)
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