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Given that E_ O ₂ / H ₂ O ^ =+1.23 ~V ; aligned & E_ S ₂ O ₈²⁻ / SO ₄²⁻ ^ =2.05 ~V ; E_ Br ₂ / Br ⁻ ^ =+1.09 ~V & E_ Au ³⁺ / Au ^ =+1.4 ~V aligned The strongest oxidising agent is :

Options

  1. AAu ³⁺
  2. BO ₂
  3. CS ₂ O ₈²⁻
  4. DBr ₂

Correct answer

C. S ₂ O ₈²⁻

Step-by-step solution

Reduction potential is maximum for S ₂ O ₈ ²⁻ therefore, it is the strongest oxidising agent amongst the given species.

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