question_answer

Electrode potential data are given below :                 \[F{{e}^{3+}}(aq)+{{e}^{-}}\to F{{e}^{-1}}(aq);\,{{E}^{o}}=+0.77V\]                 \[A{{l}^{3+}}(aq)+3{{e}^{-}}\to Al(s);\,{{E}^{o}}=-1.66V\]                 \[B{{r}_{2}}(aq)+2{{e}^{-}}\to 2B{{r}^{-}}(aq);\,{{E}^{o}}=+1.08\,V\]                 Based on the data given above, reducing power of \[F{{e}^{2+}},\,Al\] and \[B{{r}^{-}}\] will increase in the order                 [Pb. PMT 1998]

A)                 \[B{{r}^{-}}<F{{e}^{2+}}<Al\]     

B)                 \[F{{e}^{2+}}<Al<B{{r}^{-}}\]

C)                 \[Al<B{{r}^{-}}<F{{e}^{2+}}\]     

D)                 \[Al<F{{e}^{2+}}<B{{r}^{-}}\]