Question

Cl−(aq)+NO−3(aq) → NO(g)+Cl2(g) Express your answer as a chemical equation. Identify all of the phases in your answer.

Answer 1

Answer : The balanced redox reaction will be,

$6Cl^-(aq)+2NO_3^-(aq)+8H^+(aq)\rightarrow 2NO(g)+3Cl_2(g)+4H_2O(l)$

Explanation :

The given chemical equation is,

$Cl^-(aq)+NO_3^-(aq)\rightarrow NO(g)+Cl_2(g)$

In the half reaction method, the number of atoms in each half reaction and number of electrons must be balanced.

The half reactions in the acidic medium are :

Reduction : $NO_3^-(aq)+4H^+(aq)+3e^-\rightarrow NO(g)+2H_2O(l)$   ......(1)

Oxidation : $2Cl^-(aq)\rightarrow Cl_2(g)+2e^-$  .......(2)

Now multiply the equation (1) by 2 and equation (2) by 3 then added both equation, we get the balanced redox reaction.

Thus, the balanced redox reaction will be,

$6Cl^-(aq)+2NO_3^-(aq)+8H^+(aq)\rightarrow 2NO(g)+3Cl_2(g)+4H_2O(l)$