STANDARD Chemistry Standard Electrode Potentials MCQ Question
E° values of some redox couples are given below. On the basis of these values choose the correct option. E° values : Br₂/Br⁻ = +1.90 ; Ag⁺/Ag(s) = +0.80 ; Cu²⁺/Cu(s) = +0.34 ; I₂(s)/I⁻ = +0.54 V.
Cu will reduce Br⁻
Cu will reduce Ag
Cu will reduce I⁻
Cu will reduce Br₂
Correct Answer
Detailed Explanation
More positive the value of E°, greater is the tendency of the species to get reduced. On the basis of the given E° values, Br₂ is having highest E° value (+1.90) hence, Cu will easily reduce Br₂.
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