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.
Found an issue with this question?
Related Questions
More from Electrochemistry
E° value of Ni²⁺/Ni is^{-0}.25 V and Ag⁺/Ag is +0.80 V. If a cell is made by taking the two electrodes what is the feasibility of the reaction?
The molar conductivity of 0.007 M acetic acid is 20 S cm² mol⁻¹. What is the dissociation constant of acetic acid? Choose the correct option. [Λ°_H⁺ =...
An electric charge of 5 Faradays is passed through three electrolytes AgNO₃, CuSO₄ and FeCl₃ solution. The grams of each metal liberated at cathode wi...
More from
Calculate the dissociation constant \( K_a \) for acetic acid given that its conductivity is \( 4.95 \times 10^{-5} \text{ S cm}^{-1} \) at a concentr...
Match Column-I with Column-II. Column-I Column-II (a) Cathode reaction (i) Cu 2+ (aq) + 2e – → Cu (s) (b) Anode reaction (ii) Cu(s) ...