The Lassaigne’s extract is boiled with dil HNO\(_3\) before testing for halogens because
- AgCN is soluble in HNO\(_3\)
- Silver halides are soluble in HNO\(_3\)
- Ag\(_2\)S is soluble in HNO\(_3\)
- Na\(_2\)S and NaCN are decomposed by HNO\(_3\)
The Correct Option is D
Solution and Explanation
If nitrogen or sulphur is also present in the compound, the sodium fusion extract is f irst boiled with concentrated nitric acid to decompose cyanide or sulphide of sodium during Lassaigne’s test.
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