In: Chemistry
For a particular redox reaction NO is oxidized to NO3
The oxidation reaction is : NO
NO3-
Balancing Nitrogen atoms : NO
NO3-
Balancing Oxygen atoms : NO+ 2H2O
NO3-
Balancing Hydrogen atoms : NO+
2H2O+4OH-
NO3- + 4H2O
NO+ 4OH-
NO3- + 2H2O
Balancing charge : NO+ 4OH-
NO3- + 2H2O
+3e- ----------(1)
The reduction reaction is Fe
3+ Fe
2+
Balancing charge : Fe 3+ + 1 e- Fe
2+
----------(2)
The combined equation is obtained by balancing the electrons in both the equations are same.
Eqn (1) + [3xEqn(2) ] gives
NO+ 4OH- + 3Fe 3+ + 3
e-
NO3- + 2H2O +3e- + 3Fe
2+
NO+ 4OH- + 3Fe
3+
NO3- + 2H2O + 3Fe
2+
This is the balanced equation