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Can we perform sodium nitroprusside test...

Can we perform sodium nitroprusside test for sulphide, if sulphite is also present in sodium carbonate extract of sulphide?

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No, as "sodium carbonate extract" of sulphite gives rose red colouration with sodium nitroprusside.
`Na_(2)[Fe(CN)_(5)NO]+SO_(3)^(2-)+2Na^(+) to Na_(4)[Fe(CN)_(5)NOSO_(3)]`
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Knowledge Check

  • Sodium nitroprusside when added to solution of sulphide ions produces a

    A
    Red colouration
    B
    Blue colouration
    C
    Violet colouration
    D
    Brown colouration

  • Sodium nitroprusside test is used to distinguish between

    A
    alcohols and phenols
    B
    aldehydes and ketones
    C
    formic acid and other carboxylic acids
    D
    `1^@ , 2^@` and `3^@` amines.

  • Soda extract or sodium carbonate extract is prepared for

    A
    testing all cations
    B
    testing all anions
    C
    testing anion which are water insoluble
    D
    all are correct

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