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The d-and f-Block Elements
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13/03/2022 10:00 pm
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Which is a stronger reducing agent Cr2+ or Fe2+ and why?
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13/03/2022 10:06 pm
The following reactions are involved when Cr2+ and Fe2+ act as reducing agents.
Cr2+ → Cr3+
Fe2+ → Fe3+
The Eo Cr3+/Cr2+ value is - 0.41 V and Eo Fe3+/Fe2+ 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+.