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Redox reactions play a pivotal role in c...

Redox reactions play a pivotal role in chemistry and biology. The values standard redox potential `(E^(c-))` of two half cell reactions decided which way the reaction is expected to preceed. A simple example is a Daniell cell in which zinc goes into solution and copper sets deposited. Given below are a set of half cell reactions `(` acidic medium `)` along with their `E^(c-)(V` with respect to normal hydrogen electrode `)` values. Using this data, obtain correct explanations for Question.
`I_(2)+2e^(-) rarr 2I^(c-)," "E^(c-)=0.54`
`Cl_(2)+2e^(-) rarr 2Cl^(c-), " "E^(c-)=1.36`
`Mn^(3+)+e^(-) rarr Mn^(2+), " "E^(c-)=1.50`
`Fe^(3+)+e^(-) rarr Fe^(2+)," "E^(c-)=0.77`
`O_(2)+4H^(o+)+4e^(-) rarr 2H_(2)O, " "E^(c-)=1.23`
Among the following, identify the correct statement.

A

Chloride ion is oxidised by `O_(2)`

B

`Fe^(2+)` is oxidised by iodine

C

Iodine ion is oxidised by chlorine

D

`Mn^(2+)` is oxidised by chlorine

Text Solution

Verified by Experts

The correct Answer is:
C

S.R.P. of `CI_(2)` is greater than S.R.P of `I_(2)`
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ALLEN-ELECTROCHEMISTRY-EXERCISE -05 [B]
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  7. Redox reactions play a pivotal role in chemistry and biology. The valu...

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  8. Redox reactions play a pivotal role in chemistry and biology. The valu...

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  10. For the reduction of NO(3)^(c-) ion in an aqueous solution, E^(c-) is ...

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  11. The concentration of potassium ions inside a biological cell is at lea...

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  12. The concentration of potassium ions inside a biological cell is at lea...

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  13. Consider the following cell reaction : 2Fe(s)+O(2)(g)+4H^(o+)(aq) ra...

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  14. AgNO(3)(aq.) was added to an aqeous KCl solution gradually and the con...

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  15. The electrochemical cell shown below is a concentration cell. M|M^(2+)...

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  16. The electrochemical cell shown below is a concentration cell. M|M^(2+)...

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  17. The standard reduction potential data at 25^(@)C is given below E^(@...

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  18. An aqueous solution of X is added slowly to an aqueous solution of Y a...

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  19. In a galvanic cell, the salt bridge.

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  20. For the following electrochemical cell at 298K Pt(s)+H(2)(g,1"bar") ...

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