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What is the function of fusing the organic compound with sodium metal ?

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Knowledge Check

  • Nitrogen, sulphur and halogens are tested from the sodium fusion extract of the organic compound which is commonly known as Lassaigne.s extract. For preparing Lassaigen.s extract, a small quantity of the organic compound is fused with sodium metal in a fusion tube. The red tube is broken in distilled water, boiled and filtered. This filtrate is known as Lassaigne.s extract or sodium fusion extract. During testing of nitrogen in organic compound by Lassaigne.s test, which of the following compounds are formed i) NaCN ii) Fe_4[Fe(CN)_6]_3 iii) Na_4[Fe(CN)_6] iv) Fe_3[Fe(CN)_6]_4

    A
    only (i)
    B
    both i and (iii)
    C
    only i, ii, iii
    D
    only ii

  • Nitrogen, sulphur and halogens are tested from the sodium fusion extract of the organic compound which is commonly known as Lassaigne's extract. For preparing Lassaigen's extract, a small quanty of the organic compound is fused with sodium metal in a fusion tube. The red tube is broken in distilled water, boiled and filtered. This filtrate is known as Lassaigne's extract or sdodium fusion extract. Which of the following is not applicable to Lassaigne's test

    A
    The nitrogen, halogens and sulphur are converted into inorganic salts
    B
    It can be used for the detection of hydrogen in the organic compound
    C
    During fusion of the organic compound with Sodium, `Na_(2)S, NaCN` and NaX are formed
    D
    It is possible to differentiate between halogens

  • Nitrogen, sulphur and halogens are tested from the sodium fusion extract of the organic compound which is commonly known as Lassaigne's extract. For preparing Lassaigen's extract, a small quanty of the organic compound is fused with sodium metal in a fusion tube. The red tube is broken in distilled water, boiled and filtered. This filtrate is known as Lassaigne's extract or sdodium fusion extract. In the process of testing elements in Lassaigne's a test, which of the following reactions do not occur.

    A
    `Na+2H_(2)O rarr 2NaOH+H_(2)`
    B
    `2Na+H_(2)+O_(2)rarr2NaOH`
    C
    `Na+C+N rarr NaCN`
    D
    `2Na+S rarr Na_(2)S`

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    Explain the reason for the fusion of an organic compound with metallic sodium for testing nitrogen, sulphur and halogens.

    Nitrogen, sulphur and halogens are tested from the sodium fusion extract of the organic compound which is commonly known as Lassaigne's extract. For preparing Lassaigen's extract, a small quanty of the organic compound is fused with sodium metal in a fusion tube. The red tube is broken in distilled water, boiled and filtered. This filtrate is known as Lassaigne's extract or sdodium fusion extract. During testing of nitrogen in organic compound by Lassaigne's test, which of the following compounds are formed. (i) NaCN (ii) Fe_(4)[Fe(CN)_(6)]_(3) (iii) Na_(4)[Fe(CN)_(6)] (iv) Fe_(3)[Fe(CN)_(6)]_(4)

    In Lassaigne's test, the organic compound is fused with sodium metal as to

    In Lassaigne.s test, the organic compound is fused with sodium metal as to

    In Lassaigne's test, the organic compound is first fused with sodium metal The sodium metal is used because

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