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If sulpher is also present along with N ...

If sulpher is also present along with `N` and sodium thiocyanate is formed during sodium fusion, then a blood red colortion will appear on heating with ferrous sulphate due to the formation of

A

`Fe(SCN)_(3)`S

B

`FeSCN`

C

`Fe(SCN)_(2)`

D

`Fe(SCN)_(x)`

Text Solution

Verified by Experts

The correct Answer is:
A
`Fe^(3+) + 3NaSCN rarr Fe(SCN)_(3) + 3Na^(+)`
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Knowledge Check

  • In Lassaigne's test, when both N and S are present blood red colour is obtained. This is due to the formation of

    A
    ferric ferrocyanide
    B
    ferric cyanide
    C
    ferric thiocyanate
    D
    ferric hydroxide.

  • In Lassaigne's test ,the sodium extract of an organic compound containing both nitrogen and sulpher on treatment with FeCl_(3) produces a blood red colouration due to the formation of

    A
    `Fe(CNS)_(2)`
    B
    `NaCNS`
    C
    `NH_(4)CNS`
    D
    `Fe(SCN)_(3)`

  • Fe^(+3) ions in an aqueous solution gives deep red colouration with both sodium acetate (in excess) and ammonium thiocyanate (slightly acidic). The deep red colouration obtained with ammonium thiocyanate gets decolourised on addition of a solution containing F^(-) ions. The deep red colouration is due to the formation of:

    A
    `Fe(CH_(3)COO)_(2)`
    B
    `Fe(OH)_(2)CH_(3)COO`
    C
    `[Fe_(3)(OH)_(2)CH_(3)COO)_(6)]^(+)`
    D
    `[Fe_(3)(CH_(3)COO)_(6)]`

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    In Lassaigne's test when both N and S are present, blood red colour is due to the formation of

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