Class 11Chemistry3 Organic Chemistry: Purification and CharacterisationChemical analysis of organic compounds
DifficultSodium extract is heated with concentrated $HNO_3$ before testing for halogens because
- A$Ag_2S$ and $AgCN$ are soluble in acidic medium
- BSilver halides are totally insoluble in nitric acid
- C$S^{2-}$ and $CN^{-}$ ions,if present,are decomposed by conc. $HNO_3$ and hence do not interfere in the test
- D$Ag$ reacts faster with halides in acidic medium
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Similar Questions
In the Lassaigne's test for nitrogen in an organic compound,the Prussian blue colour is obtained due to the formation of:
Medium
View SolutionBeilstein test is used for the detection of which one of the following elements?
The compound formed in the positive test for nitrogen with the Lassaigne solution of an organic compound is
MediumAIEEE 2004
View SolutionIn the detection of carbon and hydrogen,the organic compound is heated with which of the following?
Easy
View SolutionConsider the following table$-$
Column-$I$
Column-$II$
$A$. Best and latest technique for isolation,purification and separation of organic compounds
$i$. Chromatography
$B$. In Lassaigne's test for $N$
$ii$. Vacuum distillation
$C$. In Lassaigne's test for $S$
$iii$. Violet coloured complex is formed
$D$. Aniline is separated from water by
$iv$. Prussian blue coloured complex is formed
$E$. Glycerol is purified from spent lye
$v$. Steam distillation
The correct match is$-$
| Column-$I$ | Column-$II$ |
|---|---|
| $A$. Best and latest technique for isolation,purification and separation of organic compounds | $i$. Chromatography |
| $B$. In Lassaigne's test for $N$ | $ii$. Vacuum distillation |
| $C$. In Lassaigne's test for $S$ | $iii$. Violet coloured complex is formed |
| $D$. Aniline is separated from water by | $iv$. Prussian blue coloured complex is formed |
| $E$. Glycerol is purified from spent lye | $v$. Steam distillation |
The correct match is$-$
Medium
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