Standard reduction potentials of the half reactions are given below: $\mathrm{F}_{2}(\mathrm{~g})+2…

Standard reduction potentials of the half reactions are given below:
$\mathrm{F}_{2}(\mathrm{~g})+2 \mathrm{e}^{-} ightarrow 2 \mathrm{~F}^{-}(\mathrm{aq}) ; \mathrm{E}^{\circ}=+2.85 \mathrm{~V}$
$\mathrm{Cl}_{2}(\mathrm{~g})+2 \mathrm{e}^{-} ightarrow 2 \mathrm{Cl}^{-}(\mathrm{aq}) ; \mathrm{E}^{\circ}=+1.36 \mathrm{~V}$
$\mathrm{Br}_{2}(\mathrm{l})+2 \mathrm{e}^{-} ightarrow 2 \mathrm{Br}^{-}(\mathrm{aq}) ; \mathrm{E}^{\circ}=+1.06 \mathrm{~V}$
$\mathrm{I}_{2}(\mathrm{~s})+2 \mathrm{e}^{-} ightarrow 2 \mathrm{I}^{-}(\mathrm{aq}) ; \mathrm{E}^{\circ}=+0.53 \mathrm{~V}$
The strongest oxidising and reducing agents respectively
are:
  1. $\mathrm{F}_{2}$ and $\mathrm{I}^{-}$
  2. $\mathrm{Br}_{2}$ and $\mathrm{Cl}^{-}$
  3. $\mathrm{Cl}_{2}$ and $\mathrm{Br}^{-}$
  4. $\mathrm{Cl}_{2}$ and $\mathrm{I}_{2}$

Solution

Higher the value of reduction potential higher will be the oxidising power whereas the lower the value of reduction potential higher will be the reducing power. ^

Asked in: JEE-TOPICTESTS-CHEMISTRY

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