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Standard reduction potentials of the hal...

Standard reduction potentials of the half reactions are given below
`F_(2(g)) + 2e^(-) rarr 2F_((aq))^(-), E^(@) = +2.85V`
`Cl_(2(g)) + 2e^(-) rarr 2Cl_((aq))^(-), E^(@) = +1.36V`
`Br_(2(l)) + 2e^(-) rarr 2Br_((aq))^(-), E^(@) = +1.06V`
`I_(2(g)) + 2e^(-) rarr 2I_((aq))^(-), E^(@) = +0.53 V`
The strongest oxidising and reducing agents respectively are

A

`Cl_(2)` and `Br^(-)`

B

`Cl_(2)` and `I_(2)`

C

`F_(2)` and `I^(-)`

D

`Br_(2)` and `Cl^(-)`

Text Solution

Verified by Experts

The correct Answer is:
C
Higher the reduction potential more easily it is reduced and hence stronger is the oxidising agent. `F_(2)` has highest reduction potential. `therefore F_(2)` is the strongest oxidising agent. Considering the reverse reaction (oxidiation reactions). higher the oxidiation potential more easily it is oxidised and hence stronger is the reducing agent.
Oxidation potential `1(-0.53V)` is highest out of 2.85,-1.36,-1.36 and 0. 53, Hence I is the strongest reducing agent.
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