Which of the following cannot be considered as application of electrochemical series?
Which of the following cannot be considered as application of electrochemical series?
Spontaneity of redox reaction
Relative strength of reducing agent
Relative strength of oxidizing agent
Use of SHE in automobile battery
Solution
The electrochemical series is a systematic arrangement of elements based on their standard electrode potentials ( $E^\circ ~~ \mathrm{E}^\circ$ ), and it has the following applications:
Spontaneity of redox reactions:
The series helps predict whether a redox reaction will occur spontaneously based on the potential difference.
Relative strength of reducing agents:
Elements lower in the series are stronger reducing agents as they tend to lose electrons easily.
Relative strength of oxidizing agents:
Elements higher in the series are stronger oxidizing agents as they have a greater tendency to gain electrons.
Use of SHE (Standard Hydrogen Electrode) in automobile batteries:
This is not an application of the electrochemical series. The SHE is primarily used as a reference electrode for measuring standard electrode potentials, not directly in automobile batteries.
Thus, option (4) does not align with the typical applications of the electrochemical series.