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  • Can someone explain A solution contains Fe2+, Fe3+ and I- ions. This solution was treated with iodine at 35°C. E° for Fe2+/ Fe3+ is +0.77 V and E° for I2/ 2I-=0.536 V. The favourable redox reaction is:

A solution contains Fe2+, Fe3+ and I- ions. This solution was treated with iodine at 35°C. E° for Fe2+/ Fe3+ is +0.77 V and E° for I2/ 2I-=0.536 V. The favourable redox reaction is:

  • Option 1)

    I2 will be reduced to I-

  • Option 2)

    There will be no redox reaction

  • Option 3)

    I- will be oxidised to I2

  • Option 4)

    Fe2+ will be oxidisedto Fe3+

 

Answers (1)

best_answer

 

Standard Electrode Potential Value -

-

 

 Since the reduction potential of Fe^{3+}/Fe^{2+} is greater than that of I_{2}/I^{-}, Fe^{3+} will be reduced and I^{-} will be oxidised.

2Fe^{3+}+2I^{-}\rightarrow 2Fe^{2+}+I_{2}


Option 1)

I2 will be reduced to I-

This is incorrect option

Option 2)

There will be no redox reaction

This is incorrect option

Option 3)

I- will be oxidised to I2

This is correct option

Option 4)

Fe2+ will be oxidisedto Fe3+

This is incorrect option

Posted by

divya.saini

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