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Acidified potassium dichromate on reacti...

Acidified potassium dichromate on reacting with a suplhite is reduced to

A

`CrO_(2) C1_(2)`

B

`CrO_(4)^(2-)`

C

`Cr^(3+)`

D

`Cr^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
C
`Cr_(2)O_(7)^(2) + 8H+ + 2SO_(3)^(2-) rarr 2Cr^(+3) + 3SO_(4)^(2-) + 4H_(2)O`
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Knowledge Check

  • Potassium dichromate is used

    A
    in leather industry
    B
    as an oxidant for the preparation of many azo compounds
    C
    Both (a) and (b)
    D
    None of the above

  • Potassium dichromate is used

    A
    in electroplating
    B
    as a reducing agent
    C
    oxidise ferrouse ion into ferric ions in acidic media as
    D
    oxidise ferrous ions into ferric ions in acidic media as an oxidsing agent

  • Acidified potassium dichromate reacts with potassium iodide and oxidiese it to I_2 . What is the oxidation state of chromium in the products of the reaction?

    A
    `+4`
    B
    `+6`
    C
    `+3`
    D
    `+2`

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