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The following reactions show the H 2 O 2 behaviour in A and B reactions as (1) P b S ( s ) + 4 H 2 O 2 a q → P b S O 4 s + 4 H 2 O l (2) H O C l + H 2 O 2 → H 3 O + + C l - + O 2

Options

  1. Aoxidising in acidic medium and reducing in basic medium
  2. Breducing in acidic medium and oxidising in basic medium
  3. Coxidising in acidic medium and reducing in acidic medium
  4. Dreducing in acidic medium and oxidising in acidic medium

Correct answer

C. oxidising in acidic medium and reducing in acidic medium

Step-by-step solution

Hydrogen peroxide oxidies lead sulphide to lead sulphate and itself gets reduced. Thus, H 2 O 2 acts as an oxidising agent in acidic medium. Hydrogen peroxide reduces hypochlorous acid to chloride ion in acidic medium and itself gets oxidised. Thus, H 2 O 2 acts as a reducing agent in acidic medium.

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