Home
Class 11
CHEMISTRY
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^(+)`
Promotional Banner

Topper's Solved these Questions

  • PURIFICATION AND CHARATERIZATION OF ORGANIC COMPOUNDS

    R SHARMA|Exercise Follow up test 14|2 Videos

  • PURIFICATION AND CHARATERIZATION OF ORGANIC COMPOUNDS

    R SHARMA|Exercise Follow up test 15|1 Videos

  • PURIFICATION AND CHARATERIZATION OF ORGANIC COMPOUNDS

    R SHARMA|Exercise Follow up test 12|2 Videos

  • NOMENCLATURE OF ORGANIC COMPOUNDS

    R SHARMA|Exercise Archives|44 Videos

  • REDOX REACTIONS

    R SHARMA|Exercise Archives|29 Videos

Similar Questions

Explore conceptually related problems

If an organic compound contains both N and S , the appearance of blood red colour takes place in Lassaignetest due to formation of

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

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

Here paragraphs are given. Based upon the paragraphs some multiple choice questions are given. Each question has 4 choices A, B, C and D. Out of which one is correct. Choose the correct option Paragraph/comprehension In the detection of elements by Lassaigne’s test, the covalent compounds are converted into ionic compounds on fusion with sodium metal. The nitrogen, sulphur and halides present in the organic compounds are test with their usual tests. In this test blue or green colour is obtained when only nitrogen is present whereas red colour is obtained when both nitrogen and sulphur are present. The Lassaigne’s extract is boiled with HNO_(3) so as to decompose Na_(2) and NaCN if present. Phosphorus is detected in the organic compound by fusing it with sodium peroxide. When sodium phosphate formed is detected with cone. HNO_(3) and ammonium molybdate. During detection of phosphours in an organic compound,yellow precipitate are formed due to the formation of

Here paragraphs are given. Based upon the paragraphs some multiple choice questions are given. Each question has 4 choices A, B, C and D. Out of which one is correct. Choose the correct option Paragraph/comprehension In the detection of elements by Lassaigne’s test, the covalent compounds are converted into ionic compounds on fusion with sodium metal. The nitrogen, sulphur and halides present in the organic compounds are test with their usual tests. In this test blue or green colour is obtained when only nitrogen is present whereas red colour is obtained when both nitrogen and sulphur are present. The Lassaigne’s extract is boiled with HNO_(3) so as to decompose Na_(2) and NaCN if present. Phosphorus is detected in the organic compound by fusing it with sodium peroxide. When sodium phosphate formed is detected with cone. HNO_(3) and ammonium molybdate. Sodium nitroprusside reacts with sulphide ion to give a purple colour due to the formation of

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)]`