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Consider the reaction : H 2 SO 3 aq + Sn aq 4 + + H 2 O l ⁡ → Sn aq 2 + + HSO 4 aq - + 3 H aq + Which of the following statements is correct ?

Options

  1. ASn 4 + is the oxidizing agent because it undergoes oxidation
  2. BSn 4 + is the reducing agent because it undergoes oxidation
  3. CH 2 SO 3 is the reducing agent because it undergoes reduction
  4. DH 2 SO 3 is the reducing agent because it undergoes oxidation

Correct answer

D. H 2 SO 3 is the reducing agent because it undergoes oxidation

Step-by-step solution

Identify oxidation states of all elements in Redox Reaction H 2 SO + 4 3 + Sn 4 + + H 2 O (l) → Sn 2 + + H SO 4 -   + 6   + 3 H + S is changing the oxidation state from (+4) to (+6). i.e H 2 SO 3 is a Reducing agent because it undergoes oxidation.

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