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JEE Advanced2007ChemistryRedox ReactionsActual

Paragraph: Redox reaction play a pivotal role in chemistry and biology. The values of standard redox potential (E^ ) of two half-cell reactions decide which way the reaction is expected to proceed. A simple example is a Daniel cell in which zinc goes into solution and copper gets deposited. Given below are a set of half-cell reactions (acidic medium) along with their E^ (V with respect to normal hydrogen electrode) v

Options

  1. AChloride ion is oxidised by O ₂
  2. BFe ²⁺ is oxidised by iodine
  3. CIodide ion is oxidised by chlorine
  4. DMn ²⁺ is oxidised by chlorine

Correct answer

C. Iodide ion is oxidised by chlorine

Step-by-step solution

2 I ⁻+ Cl ₂ I ₂+2 Cl ⁻ E_ cell ^ =1.36-0.54=0.82 ~V E_ cell ^ is +v e cell reactions is feasible.

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