Br_2 + 2X^{-}_{aq} to X_2 + 2Br^{-}_{aq} abov | vedclass

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(B) The given reaction is a displacement reaction where $Br_2$ acts as an oxidizing agent.For the reaction to be spontaneous,the standard reduction po

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$I^{-}$ only

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(B) The given reaction is a displacement reaction where $Br_2$ acts as an oxidizing agent.For the reaction to be spontaneous,the standard reduction potential of the halogen being displaced $(X_2/X^-)$ must be lower than that of $Br_2/Br^-$.The standard reduction potentials $(E^{\circ})$ are:$F_2/F^- = +2.87 \ V$$Cl_2/Cl^- = +1.36 \ V$$Br_2/Br^- = +1.09 \ V$$I_2/I^- = +0.54 \ V$Since $Br_2$ can only oxidize species with a lower reduction potential than itself,it can only oxidize $I^-$ to $I_2$ $(E^{\circ} = 0.54 \ V Therefore,the reaction is correct when $X^-$ is $I^-$.

$Br_2 + 2X^{-}_{aq} \to X_2 + 2Br^{-}_{aq}$ above reaction is correct when $X^{-}$ is :

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