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While sulphate dioxide and hydrogen pero...

While sulphate dioxide and hydrogen peroxide can act as oxidising as well as reducing agents in their reactions, ozone and nitric acid act only as oxidants. Why?

Text Solution

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The oxidation state of S in `SO_2` is +4. It can be oxidised to +6 oxidation state or reduced to +2. Therefore , it acts as a reducing agent as well as oxidising agent . Similarly the oxidation state of oxygen in `H_2O_2` is - 1 It can be oxidised to `O_2` (zero oxidaiton sate) or reduced to `H_2` O or (-2 oxidaiton state ) and therefore acts as reducing as well as oxidising agent .
However, both ozone and nitric acid can only decrease their oxidation number and therefore , act only as oxidising agents.
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Knowledge Check

  • Oxide of nitrogen which acts as oxidising as well as reducing agent is

    A
    NO
    B
    `N_2O_5`
    C
    `NO_2`
    D
    `N_2O`

  • Which one can act as oxidising & reducing agent

    A
    `HNO_(3)`
    B
    `H_(2)O_(2)`
    C
    `H_(2)SO_(3)`
    D
    `H_(2)SO_(4)`

  • Which one can act as oxidising & reducing agent

    A
    `HNO_(3)`
    B
    `H_(2)O_(2)`
    C
    `H_(2)SO_(3)`
    D
    `H_(2)SO_(4)`

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