12th Class Chemistry The d-and f-Block Elements / d तथा f ब्लॉक के तत्व

  • question_answer 7)
     Which is a stronger reducing agent, Cr2+ or Fe2+ and why?

    Answer:

    Cr2+ is a stronger reducing agent than Fe2+. This can be explained on the basis of the standard electrode potential values E°(Cr3+/Cr2+ = –0.41 V) and E° (Fe3+/Fe2+ = + 0.77 V). Thus Cr2+ is easily oxidised to Cr3+ but Fe2+ cannot be as readily oxidised to Fe3+.  


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