Question

CrO4 2- is a strong oxidizing agent while MnO4 2- is not. WHY??????

Answer 1

$CrO_4^{2-}$ is a strong oxidizing agent while $MnO_4^{2-}$ is not.

Explanation:

• In the given ions, the central atom is different whereas the surrounding particles are same.
• The stability of any oxidation state or the tendency for a transition metal ion to acts as an oxidizing or reducing agent depends upon the electrode potential.
• Metals with high electrode potential value act as oxidizing agent, whereas with lower value acts as a reducing agent.
• Accordingly the electrode potential value for given ions are as follows:

1. $CrO_4^{2-}$ - +1.52 V
2. $MnO_4^{2-}$ - + 1.33 V

• As the electrode potential value for $CrO_4^{2-}$is higher than $MnO_4^{2-}$, it is considered as strong oxidizing agent.

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Answer 2

Explanation:

cro42(_) isa strong oxidizing agent whie Mno42(_)is not why