IIT JAM
   Top Resources
Shweta Thakur posted an Question
March 19, 2021 • 21:06 pm 30 points
  • IIT JAM
  • Chemistry (CY)

Plz explain this question

stored In sampie Problem8 lodine (L,) and bromine (Br,) are added to a solution containing iodide ) d hromide (Br) 10ns. What reaction would occur if the concentration of each species is1M? The electrode otentials for the reactions are: I,/-0-54 V,Br,/Br Po Solution. The reaction can be either Br,/Br-=1-08 v Br+2 I 2Brr+I, or I,+2Br 21+Bt For 1st reaction, E.M.F. = E° Br /Br I=108 -0-54 = 054 V For 2nd reaction, E.M.F. = E°, E° =0-54-1-08=-054 Br, As E.M.E. is positive for the 1st reaction, hence the cell reaction is Br,+2I 2 Br +I

1 Answer(s) Answer Now
  • 0 Likes
  • 2 Comments
  • 0 Shares
  • Achyut ranjan gogoi

    in this question standard reduction potential of br2 and i2 are given and we know that if the species have more reduction potential then this species will reduced first so br2 has high reduction potential that's why this species is reduced and i2 is oxidised

  • comment-profile-img>
    Priyanshu kumar best-answer

    You have to use the concept of feasibility. when emf comes to be positive then reaction is feasible otherwise not. Here two reaction possibilities arises. In one case emf comes out to be positive which is feasible and in other case emf comes out to be negative which is not feasible

    cropped9126550874227935676.jpg
whatsapp-btn

Do You Want Better RANK in Your Exam?

Start Your Preparations with Eduncle’s FREE Study Material

  • Updated Syllabus, Paper Pattern & Full Exam Details
  • Sample Theory of Most Important Topic
  • Model Test Paper with Detailed Solutions
  • Last 5 Years Question Papers & Answers

Sign Up to Download FREE Study Material Worth Rs. 500/-