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EᶱV  values of some redox couples are given below. On the basis of these values choose the correct option.

EᶱV values : Br2 /Br– = + 1.90; Ag+ /Ag(s) = +0.80

Cu2+/Cu(s) = + 0.34; I2 (s)/I– = + 0.54

(i) Cu will reduce Br–

(ii) Cu will reduce Ag

(iii) Cu will reduce I–

(iv) Cu will reduce Br2

0 2 Views | Posted 4 months ago
Asked by Shiksha User

  • 1 Answer

  • A

    Answered by

    alok kumar singh | Contributor-Level 10

    4 months ago

    This is a Multiple Choice Questions as classified in NCERT Exemplar

    Option (iv) is the correct answer

    Reduction potential is defined as the tendency of the specie to get reduced. More positive the value of E® , greater is the tendency of the species to get reduced and stronger is the oxidising agent. 

    On the basis of the given E®  values, the order of getting reduced is:

    Br2Ag + I2Cu2+

    Hence, Cu has the least tendency to get reduced and will itself gets oxidise and reduce other species as: Br2? , Ag+ and I2.

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