Electrochemistry - Result Question 38

####40. A solution contains Fe2+,Fe3+ and Iions. This solution was treated with iodine at 35C. E for Fe3+/Fe2+ is +0.77V and E for I2/2I=0.536V. The favourable redox reaction is : [2011 M]

(a) I2 will be reduced to I

(b) There will be no redox reaction

(c) Iwill be oxidised to I2

(d) Fe2+ will be oxidised to Fe3+

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Solution:

  1. (c) Given Fe+3/Fe2+=+0.77V

and I2/2I=0.536V

Reduction potential of Fe3+/Fe2+>I2/I, so Fe3+ will be reduced and Iwill be oxidised.



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