Qstnid -I-7- Which Is A Stronger Reducing Agent Cr<sup>2+</sup> Or Fe<sup>2+</sup> And Why? - 08: The D-and F-block Elements - Neet-xii-chemistry

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NEET-XII-Chemistry

08: The d-and f-Block Elements

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#7
Which is a stronger reducing agent Cr²⁺ or Fe²⁺ and why?

Ans : The following reactions are involved when Cr²⁺ and Fe²⁺ act as reducing agents.

Cr²⁺ Cr³⁺Fe²⁺ Fe³⁺

The value is -0.41 V and is +0.77 V. This means that Cr²⁺ can be easily oxidized to Cr³⁺, but Fe²⁺ does not get oxidized to Fe³⁺ easily. Therefore, Cr²⁺ is a better reducing agent that Fe³⁺.