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For I2 + 2e to 2I^(-) , standard reducti...

For `I_2 + 2e to 2I^(-)` , standard reduction potential` = + 0.54` volt. For ` 2Br^(-) to Br_2 + 2e^(-)` . Standard oxidation potential = - 1.09 volt. For `Fe to Fe^(2+) + 2e^(-)` , standard oxidation potential = + 0.44 volt. Which of the following reaction is non-spontaneous ?

A

`Br_(2) + 2I^(-) to 2Br^(-) + I_2`

B

`Fe + Br_2 to Fe^(2+) + 2Br^(-)`

C

`Fe + I_2 to Fe^(2+) + 2I^-`

D

`I_2 + 2Br^(-) to 2I^(-) + Br_(2)`

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The correct Answer is:
D
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AAKASH SERIES-ELECTROCHEMISTRY -LEVEL-I ( EXERCISE-I)
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  2. When Zn piece is kept in CuSO4 solution, copper gets precipitated beca...

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  3. For I2 + 2e to 2I^(-) , standard reduction potential = + 0.54 volt. Fo...

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  4. Beryllium is placed above magnesium in the Il group. When beryllium du...

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  5. E^(@) for Fe^(2+) + 2e to Fe is -0.44 V , E^(@) for Zn^(2+) + 2e to ...

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  6. Based on the data given below , the correct order of reducing power i...

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  7. For the cell prepared from electrod A , Cr2O7^(2-) |Cr^(3+) , E("red"...

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  8. The S.R.Ps of Cu^(2+) // Cu , Hg^(2+)//Hg and Zn^(2+)//Zn are respecti...

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  9. The E(M^(3+)|M^(2+))^(0) values for Cr, Mn, Fe and Co are -0.41, +1.57...

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  10. (A): A blue colour is obtained when a copper wire is immersed in AgNO3...

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  11. The half cell reaction, with its standard reduction potentials are ...

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  12. A student made the following observations in the laboratory, A) Cl...

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  13. Four colourless salt solutions are placed in separate test tubes and a...

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  14. (A): In the construction of Galvanic cell, lithium electrode can not b...

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  15. The potential of single electrode depends upon

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  16. The Nernst equation giving dependence of electrode potential on concen...

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  17. Consider the following four electrode : A = Cu^(2+) (0.0001 M)// Cu(...

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  18. The Nernst equation for the reduction potential of a non metal A when ...

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  19. Which of the following is not correct ?

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  20. The e.m.f of the following Deniell at 298 K is E1 , Zn//ZnSO4 (0.01 M...

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