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Class 9-10, JEE & NEET
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For testing halogens in an organic compound with AgNO3 solution, sodium extract (Lassaigne’s test) is acidified with dilute HNO3. What will happen if a student acidifies the extract with dilute H2 SO4 in place of dilute HNO3?
If dilute H2 SO4is added then sodium sulphide and sodium cyanine are not decomposed thereby we will not get the correct result if halides are also present.