Balancing A Redox Reaction

Here, acts as a oxidizing agent.
Basically, Hydrogen and oxygen atoms are balanced on both sides of the equation.
The balanced equation is :

It is a redox reaction. After complete balance equation, the values of variables are:
.

For a redox reaction to be feasible, the standard electrode potential for the overall reaction should be positive. This can be determined by subtracting the standard electrode potential of the reduction half-reaction from the oxidation half-reaction. If the result is positive, the reaction is spontaneous. Let's check each pair: - For and : - For and : - For and : - For and : Thus, the redox reaction between and is not feasible because the value is negative.