Question:

The more positive the value of $E^{\circ}$, the greater is the tendency of the species to get reduced. Using the. standard electrode potential of redox couples given below find out which of the following is the strongest oxidising agent. $E^{\circ}$ values : $Fe^{3+}/Fe^{2+} = + 0.77; I_{2\left(s\right)}/I^- = + 0.54$; $Cu^{2+}/Cu = + 0.34$; $Ag^{+}/Ag = + 0.80\, V$

Updated On: Jul 31, 2023
  • $Fe^{3+}$
  • $I_{2(s)}$
  • $Cu^{2+}$
  • $Ag^+$
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The Correct Option is D

Solution and Explanation

Strongest oxidising agent means it has greater tendency to get reduced. Thus, $Ag^+$ having more positive $E^{\circ}$ value, is the strongest oxidising agent.

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Notes on Classical Idea Of Redox Reactions – Oxidation And Reduction Reactions

Concepts Used:

Oxidation and Reduction

What is Oxidation? 

Oxidation is a chemical process which can be explained by following four point of views 

In terms of oxygen transfer 

In terms of electron transfer 

In terms of hydrogen transfer 

In terms of oxidation number 

Oxidation in Terms of Oxygen Transfer – Oxidation is gain of oxygen.

What is Reduction? 

Reduction is a chemical process which can be explained by following four point of views 

In terms of oxygen transfer 

In terms of electron transfer 

In terms of hydrogen transfer 

In terms of oxidation number 

Reduction in Terms of Oxygen Transfer – Reduction is loss of oxygen.

What is Redox Reaction? 

A chemical reaction which involves transfer of electrons or change in oxidation number of atoms is called redox reaction.