The balanced redox reaction is
3Fe + 2NO₃⁻+ 8H+ → 3Fe²⁺ + 2NO + 4H2O
<h3>What is Galvanic cell? </h3>
It is a device that is used for the conversion of the chemical energy which is produce in the redox reaction into the electrical energy. It is also termed as the voltaic cell or electrochemical cell.
In the voltaic cell, at anode which is negative electrode of voltaic cell oxidation occurs and at the cathode which is positive electrode, reduction occurs
<h3>What is redox reaction? </h3>
The reaction in which both reduction and oxidation reaction takes place simultaneously is known as redox reaction.
<h3>What is oxidation reaction? </h3>
The reaction in which a substance or compound or species looses its electrons. In this reaction, oxidation state of an element increases.
<h3>What is reduction reaction? </h3>
The reaction in which a substance or compound or species accept the electrons. In this reaction, oxidation state of an element decreases.
The given two-half reactions are:
At anode:
3Fe → 3Fe²⁺ + 6e-
At cathode:
8H(+) + 2NO₃⁻ → 2NO + 4H2O
Redox reaction:
3Fe + 2NO₃⁻+ 8H+ → 3Fe²⁺ + 2NO + 4H2O
According to the voltaic cell, the half-cell reaction (1) shows oxidation reaction therefore, it occurs at anode and the half-cell reaction (2) shows reduction reaction therefore, it occurs at cathode.
Thus, we concluded that the redox reaction is
3Fe + 2NO₃⁻+ 8H+ → 3Fe²⁺ + 2NO + 4H2O
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