BITSAT2023ChemistryElectrochemistryActual
Electrode potential data are given below: Fe ⁺³( aq )+ e ⁻ Fe ⁺²( aq ) ; E ^ =+0.77 ~V Al ³⁺( aq )+3 e ⁻ Al _ ( s ) ; E ^ =-1.66 ~V Br ₂( aq )+2 e ⁻ 2 Br ⁻( aq ) ; E ^ =+1.08 ~V Based on the data, the reducing power of Fe ²⁺ , Al and Br ⁻ will increase in the order
Options
- ABr ⁻ < Fe ²⁺ < Al
- BFe ²⁺ < Al < Br ⁻
- CAl < Br ⁻ < Fe ²⁺
- DAl < Fe ²⁺ < Br ⁻
Correct answer
A. Br ⁻ < Fe ²⁺ < Al
Step-by-step solution
array rrrr & Fe & A1 & B E_ Red ^ & 0.77 & -1.66 & 1.08 E_ Oxi ^ & -0.77 & 1.66 & -1.08 array Hence, reducing power Al > Fe ²⁺> Br