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Sodium extract is heated with con. HNO(3...

Sodium extract is heated with con. `HNO_(3)` before testing for halogens because

A

Silver halides are insoluble in `HNO_(3)`.

B

`Na_(2)S` and `NaCN` are decomposed by `HNO_(3)`

C

`Ag_(2)S` in soluble in `HNO_(3)`

D

`AgCN` in soluble in `HNO_(3)`.

Text Solution

Verified by Experts

The correct Answer is:
B
`HNO_(3)` converts `Na_(2)S` and `NaCN` to `H_(2)S` and `HCN` respectively which escape from reaction mixture.
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NARAYNA-PRACTICAL ORGANIC CHEMISTRY-SCQ_TYPE
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  2. The % of sulphur in an organic compound whose 0.32 gm. Produde 0.23 gm...

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  3. Sodium extract is heated with con. HNO(3) before testing for halogens ...

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  4. To determinent the weight of a halogen in orangic compound, the compou...

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  5. Detection of the chlorine is possible without preparing sodium extract...

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  6. During the testing for phosphorus in organic compounds, a yellow solut...

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  7. In Lassaigne’s test, the organic compound is fused with a piece of sod...

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  8. In the Lassaigne's test for the detection of nitrogen in an organic co...

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  9. In the Lassaigne’s test, the blood red colouration is due to the forma...

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  10. In Lassaigne's test for nitrogen the blue colour is due to the formati...

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  11. In Kjeldahl's method, nitrogen present is estimated as :

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  12. The percentate of sulphur in the organic, when 0.2595g of a sulphur co...

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  13. If 0.228 g of silver salt of dibasic acid gabe a residue of 0.162 g of...

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  14. In Carius tube the compound ClCH(2)-COOH was heated with fuming HNO...

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  15. Lassaigne's test for the detection of nitrogen fails in

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  16. The compound that does not give a blue colour in Lassaigne's test is

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  17. The Lassaigne's extract is boiled with dil. HNO(3) before testing for ...

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  18. In Carius tube the compound ClCH(2)-COOH was heated with fuming HNO...

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  19. If 0.24 g of a volatile liquid upon vaporization gives 45 ml of vapour...

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  20. In sodium fusion test of roganilc compound, the nitrogen of a organic ...

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