balance the following redox reaction in a basic environment Fe^3+(aq) + NO(g) --> Fe(s) + HNO2 (aq)
Half reaction,
Fe3+(aq) ---> Fe(s)
Balance e-,
Fe3+ + 3e- --> Fe
Second half cell,
NO(g) ---> HNO2(aq)
Balance O,
NO + H2O ---> HNO2
balance H,
NO + H2O ---> HNO2 + H+
Add OH-,
NO + OH- + H2O ---> HNO2 + H2O
NO + OH- ---> HNO2
Add e-,
NO + OH- ---> HNO2 + H2O + e-
multiply by 3,
3NO + 3OH- ---> 3HNO2 + 3H2O + 3e-
Add half cells
Fe3+ + 3e- --> Fe
3NO + 3OH- ---> 3HNO2 + 3H2O + 3e-
-----------------------------------------------------
Fe3+(aq) + 3NO(g) + 3OH-(aq) ----> Fe(s) + 3HNO2(aq) + 3H2O(l)
is the final balanced equation
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